FLAGMAN

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 116.2999999999999971578290569595992565155029296875,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-06T07:04:05+00:00",
        "lat": 46.6236999999999994770405464805662631988525390625,
        "lon": 142.7678333000000066022039391100406646728515625
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 116.2999999999999971578290569595992565155029296875,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-06T07:04:05+00:00",
        "lat": 46.6236999999999994770405464805662631988525390625,
        "lon": 142.7678333000000066022039391100406646728515625
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 224.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 11.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 60.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3622,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.40000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-06T06:11:15+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 225m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 60 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 225m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6229407000000009020368452183902263641357421875,
            "lon": 142.768874000000010937583283521234989166259765625
        },
        "time_window": {
            "start_ts": "2026-07-06T06:11:15+00:00",
            "end_ts": "2026-07-06T07:11:37+00:00"
        },
        "searched_at": "2026-07-06T12:45:02.208133+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 224.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 11.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 60.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3622,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.40000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-06T06:11:15+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 225m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 60 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 225m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6229407000000009020368452183902263641357421875,
            "lon": 142.768874000000010937583283521234989166259765625
        },
        "time_window": {
            "start_ts": "2026-07-06T06:11:15+00:00",
            "end_ts": "2026-07-06T07:11:37+00:00"
        },
        "searched_at": "2026-07-06T12:45:05.041052+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 259,
    "distance_consistency_m": 23.699999999999999289457264239899814128875732421875,
    "duration_minutes": 58.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3500,
    "speed_a_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.56999999999999995115018691649311222136020660400390625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-06T06:08:28+00:00",
        "end": "2026-07-06T07:06:48+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 64,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 259m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 58 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b124m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 211m, avg 259m) for 58 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 259,
    "distance_consistency_m": 23.699999999999999289457264239899814128875732421875,
    "duration_minutes": 58.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3500,
    "speed_a_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.56999999999999995115018691649311222136020660400390625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-06T06:08:28+00:00",
        "end": "2026-07-06T07:06:48+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 64,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 259m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 58 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b124m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 211m, avg 259m) for 58 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 171.900000000000005684341886080801486968994140625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-06T06:08:28+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 171.900000000000005684341886080801486968994140625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-06T06:08:28+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 267,
    "distance_consistency_m": 16.89999999999999857891452847979962825775146484375,
    "duration_minutes": 83,
    "overlap_duration_s": 4982,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.2800000000000000266453525910037569701671600341796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T05:39:29+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 267m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 83 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 267m) for 83 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62454939999999936617314233444631099700927734375,
            "lon": 142.767559400000010327858035452663898468017578125
        },
        "time_window": {
            "start_ts": "2026-07-06T05:39:29+00:00",
            "end_ts": "2026-07-06T07:02:31+00:00"
        },
        "searched_at": "2026-07-06T12:00:10.692006+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 267,
    "distance_consistency_m": 16.89999999999999857891452847979962825775146484375,
    "duration_minutes": 83,
    "overlap_duration_s": 4982,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.2800000000000000266453525910037569701671600341796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T05:39:29+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 267m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 83 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 267m) for 83 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62454939999999936617314233444631099700927734375,
            "lon": 142.767559400000010327858035452663898468017578125
        },
        "time_window": {
            "start_ts": "2026-07-06T05:39:29+00:00",
            "end_ts": "2026-07-06T07:02:31+00:00"
        },
        "searched_at": "2026-07-06T12:00:13.496260+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 226.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 8.800000000000000710542735760100185871124267578125,
    "duration_minutes": 122.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 7363,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.309999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-06T05:08:54+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 227m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 123 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 227m) for 123 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62294940000000309510141960345208644866943359375,
            "lon": 142.768906100000009473660611547529697418212890625
        },
        "time_window": {
            "start_ts": "2026-07-06T05:08:54+00:00",
            "end_ts": "2026-07-06T07:11:37+00:00"
        },
        "searched_at": "2026-07-06T11:45:02.024088+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 226.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 8.800000000000000710542735760100185871124267578125,
    "duration_minutes": 122.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 7363,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.309999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-06T05:08:54+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 227m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 123 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 227m) for 123 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62294940000000309510141960345208644866943359375,
            "lon": 142.768906100000009473660611547529697418212890625
        },
        "time_window": {
            "start_ts": "2026-07-06T05:08:54+00:00",
            "end_ts": "2026-07-06T07:11:37+00:00"
        },
        "searched_at": "2026-07-06T11:45:04.768442+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 232,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-06T05:08:27+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 232,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-06T05:08:27+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "radius_m": 602.799999999999954525264911353588104248046875,
    "duration_minutes": 123,
    "points": 13,
    "centroid": {
        "lat": 46.624096146153846120796515606343746185302734375,
        "lon": 142.768360253846140039968304336071014404296875
    },
    "bbox": {
        "min_lat": 46.62355000000000160298441187478601932525634765625,
        "min_lon": 142.76111670000000231084413826465606689453125,
        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.7691833000000087849912233650684356689453125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 602.799999999999954525264911353588104248046875,
    "duration_minutes": 123,
    "points": 13,
    "centroid": {
        "lat": 46.624096146153846120796515606343746185302734375,
        "lon": 142.768360253846140039968304336071014404296875
    },
    "bbox": {
        "min_lat": 46.62355000000000160298441187478601932525634765625,
        "min_lon": 142.76111670000000231084413826465606689453125,
        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.7691833000000087849912233650684356689453125
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 269,
    "distance_consistency_m": 13.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 157,
    "overlap_duration_s": 9421,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T04:25:30+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 269m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 157 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 269m) for 157 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 269,
    "distance_consistency_m": 13.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 157,
    "overlap_duration_s": 9421,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T04:25:30+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 269m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 157 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 269m) for 157 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 227,
    "distance_consistency_m": 7.5,
    "duration_minutes": 183.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 11032,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.2600000000000000088817841970012523233890533447265625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-06T04:07:45+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 42,
        "vessel_b": 42
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 227m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 184 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 227m) for 184 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62295180000000272002580459229648113250732421875,
            "lon": 142.768916899999993574965628795325756072998046875
        },
        "time_window": {
            "start_ts": "2026-07-06T04:07:45+00:00",
            "end_ts": "2026-07-06T07:11:37+00:00"
        },
        "searched_at": "2026-07-06T10:30:06.865206+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 227,
    "distance_consistency_m": 7.5,
    "duration_minutes": 183.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 11032,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.2600000000000000088817841970012523233890533447265625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-06T04:07:45+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 42,
        "vessel_b": 42
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 227m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 184 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 227m) for 184 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62295180000000272002580459229648113250732421875,
            "lon": 142.768916899999993574965628795325756072998046875
        },
        "time_window": {
            "start_ts": "2026-07-06T04:07:45+00:00",
            "end_ts": "2026-07-06T07:11:37+00:00"
        },
        "searched_at": "2026-07-06T10:30:09.382337+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 298,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-07-06T04:02:26+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 298,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-07-06T04:02:26+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "radius_m": 624.6000000000000227373675443232059478759765625,
    "duration_minutes": 189,
    "points": 20,
    "centroid": {
        "lat": 46.62405416499999688539901399053633213043212890625,
        "lon": 142.7686433349999788333661854267120361328125
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    "bbox": {
        "min_lat": 46.62355000000000160298441187478601932525634765625,
        "min_lon": 142.76111670000000231084413826465606689453125,
        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.7691833000000087849912233650684356689453125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 624.6000000000000227373675443232059478759765625,
    "duration_minutes": 189,
    "points": 20,
    "centroid": {
        "lat": 46.62405416499999688539901399053633213043212890625,
        "lon": 142.7686433349999788333661854267120361328125
    },
    "bbox": {
        "min_lat": 46.62355000000000160298441187478601932525634765625,
        "min_lon": 142.76111670000000231084413826465606689453125,
        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.7691833000000087849912233650684356689453125
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    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 227.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 7,
    "duration_minutes": 214.5,
    "overlap_duration_s": 12871,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-06T03:37:06+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 50,
        "vessel_b": 50
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 227m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 214 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 227m) for 214 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 186.099999999999994315658113919198513031005859375,
    "avg_distance_m": 227.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 7,
    "duration_minutes": 214.5,
    "overlap_duration_s": 12871,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
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    },
    "time_window": {
        "start": "2026-07-06T03:37:06+00:00",
        "end": "2026-07-06T07:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 50,
        "vessel_b": 50
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 227m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 214 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 186m, avg 227m) for 214 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 358,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-06T03:02:25+00:00",
        "lat": 46.62395000000000067075234255753457546234130859375,
        "lon": 142.769149999999996225596987642347812652587890625
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 358,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-06T03:02:25+00:00",
        "lat": 46.62395000000000067075234255753457546234130859375,
        "lon": 142.769149999999996225596987642347812652587890625
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "radius_m": 635.200000000000045474735088646411895751953125,
    "duration_minutes": 249,
    "points": 27,
    "centroid": {
        "lat": 46.624033944444448707145056687295436859130859375,
        "lon": 142.768782096296263262047432363033294677734375
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    "bbox": {
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        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.76920000000001209627953357994556427001953125
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    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 635.200000000000045474735088646411895751953125,
    "duration_minutes": 249,
    "points": 27,
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        "lon": 142.768782096296263262047432363033294677734375
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        "min_lat": 46.62355000000000160298441187478601932525634765625,
        "min_lon": 142.76111670000000231084413826465606689453125,
        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.76920000000001209627953357994556427001953125
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    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 269.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 11.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 280,
    "overlap_duration_s": 16801,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T02:22:30+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 270m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 280 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 270m) for 280 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 269.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 11.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 280,
    "overlap_duration_s": 16801,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T02:22:30+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 270m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 280 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 270m) for 280 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 388,
    "points_in_zone": 59,
    "first_point": {
        "ts": "2026-07-06T02:32:25+00:00",
        "lat": 46.62395000000000067075234255753457546234130859375,
        "lon": 142.76920000000001209627953357994556427001953125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 388,
    "points_in_zone": 59,
    "first_point": {
        "ts": "2026-07-06T02:32:25+00:00",
        "lat": 46.62395000000000067075234255753457546234130859375,
        "lon": 142.76920000000001209627953357994556427001953125
    },
    "last_point": {
        "ts": "2026-07-06T09:00:25+00:00",
        "lat": 46.401150000000001227817847393453121185302734375,
        "lon": 142.571016700000001264925231225788593292236328125
    }
}

{
    "radius_m": 643,
    "duration_minutes": 309,
    "points": 36,
    "centroid": {
        "lat": 46.624018049999989443676895461976528167724609375,
        "lon": 142.76888194166662060524686239659786224365234375
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    "bbox": {
        "min_lat": 46.62355000000000160298441187478601932525634765625,
        "min_lon": 142.76111670000000231084413826465606689453125,
        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.76920000000001209627953357994556427001953125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 643,
    "duration_minutes": 309,
    "points": 36,
    "centroid": {
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        "lon": 142.76888194166662060524686239659786224365234375
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    "bbox": {
        "min_lat": 46.62355000000000160298441187478601932525634765625,
        "min_lon": 142.76111670000000231084413826465606689453125,
        "max_lat": 46.6262167000000005145921022631227970123291015625,
        "max_lon": 142.76920000000001209627953357994556427001953125
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 270.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 10.199999999999999289457264239899814128875732421875,
    "duration_minutes": 335,
    "overlap_duration_s": 20099,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T01:27:32+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 37,
        "vessel_b": 37
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 271m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 335 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 271m) for 335 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 210.900000000000005684341886080801486968994140625,
    "avg_distance_m": 270.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 10.199999999999999289457264239899814128875732421875,
    "duration_minutes": 335,
    "overlap_duration_s": 20099,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-06T01:27:32+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 37,
        "vessel_b": 37
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 211m, avg 271m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 335 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 211m, avg 271m) for 335 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 396.19999999999998863131622783839702606201171875,
    "points_in_zone": 60,
    "first_point": {
        "ts": "2026-07-06T01:50:25+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769166699999999536885297857224941253662109375
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    "last_point": {
        "ts": "2026-07-06T08:26:35+00:00",
        "lat": 46.480666700000000446379999630153179168701171875,
        "lon": 142.62956669999999803621903993189334869384765625
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}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396.19999999999998863131622783839702606201171875,
    "points_in_zone": 60,
    "first_point": {
        "ts": "2026-07-06T01:50:25+00:00",
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        "ts": "2026-07-06T08:26:35+00:00",
        "lat": 46.480666700000000446379999630153179168701171875,
        "lon": 142.62956669999999803621903993189334869384765625
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}

{
    "radius_m": 647.6000000000000227373675443232059478759765625,
    "duration_minutes": 369,
    "points": 45,
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    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 647.6000000000000227373675443232059478759765625,
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    "centroid": {
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    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 269.80000000000001136868377216160297393798828125,
    "avg_distance_m": 272.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 370.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 22203,
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    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-06T00:52:28+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 40,
        "vessel_b": 40
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 270m, avg 272m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 370 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 270m, avg 272m) for 370 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 269.80000000000001136868377216160297393798828125,
    "avg_distance_m": 272.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 370.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 22203,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-06T00:52:28+00:00",
        "end": "2026-07-06T07:02:31+00:00"
    },
    "points_count": {
        "vessel_a": 40,
        "vessel_b": 40
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 270m, avg 272m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 370 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 270m, avg 272m) for 370 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 399,
    "points_in_zone": 55,
    "first_point": {
        "ts": "2026-07-06T00:50:24+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.7691833000000087849912233650684356689453125
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    "last_point": {
        "ts": "2026-07-06T07:29:24+00:00",
        "lat": 46.6086667000000005600668373517692089080810546875,
        "lon": 142.720499999999987039700499735772609710693359375
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}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 399,
    "points_in_zone": 55,
    "first_point": {
        "ts": "2026-07-06T00:50:24+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
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        "ts": "2026-07-06T07:29:24+00:00",
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}

{
    "radius_m": 648.3999999999999772626324556767940521240234375,
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    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 648.3999999999999772626324556767940521240234375,
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}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 227,
    "distance_consistency_m": 6.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 46.5,
    "overlap_duration_s": 2789,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
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        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-07-05T23:14:23+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 227m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 46 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 227m) for 46 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 227,
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    "duration_minutes": 46.5,
    "overlap_duration_s": 2789,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.190000000000000002220446049250313080847263336181640625,
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    "speed_b_std": 0,
    "speed_summary": {
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        "vessel_b": {
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            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-07-05T23:14:23+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 227m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 46 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 227m) for 46 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 381.1000000000000227373675443232059478759765625,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-05T23:53:24+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T06:14:27+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769149999999996225596987642347812652587890625
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}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
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    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-05T23:53:24+00:00",
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        "lon": 142.7691833000000087849912233650684356689453125
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        "ts": "2026-07-06T06:14:27+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769149999999996225596987642347812652587890625
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}

{
    "radius_m": 5.5,
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    "points": 45,
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{
    "radius_m": 5.5,
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}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 266.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 18.800000000000000710542735760100185871124267578125,
    "duration_minutes": 380,
    "overlap_duration_s": 22799,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T22:33:32+00:00",
        "end": "2026-07-06T04:53:31+00:00"
    },
    "points_count": {
        "vessel_a": 29,
        "vessel_b": 29
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 380 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b119m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 380 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.624566799999996646874933503568172454833984375,
            "lon": 142.767685300000010784060577861964702606201171875
        },
        "time_window": {
            "start_ts": "2026-07-05T22:33:32+00:00",
            "end_ts": "2026-07-06T04:53:31+00:00"
        },
        "searched_at": "2026-07-06T05:15:04.267562+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 266.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 18.800000000000000710542735760100185871124267578125,
    "duration_minutes": 380,
    "overlap_duration_s": 22799,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T22:33:32+00:00",
        "end": "2026-07-06T04:53:31+00:00"
    },
    "points_count": {
        "vessel_a": 29,
        "vessel_b": 29
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 380 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b119m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 380 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.624566799999996646874933503568172454833984375,
            "lon": 142.767685300000010784060577861964702606201171875
        },
        "time_window": {
            "start_ts": "2026-07-05T22:33:32+00:00",
            "end_ts": "2026-07-06T04:53:31+00:00"
        },
        "searched_at": "2026-07-06T05:15:06.730448+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 228.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 5,
    "duration_minutes": 95.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5718,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T22:25:34+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 229m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 95 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 229m) for 95 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 228.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 5,
    "duration_minutes": 95.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5718,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T22:25:34+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 229m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 95 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 229m) for 95 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 384.1000000000000227373675443232059478759765625,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-05T22:50:23+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T05:14:27+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769166699999999536885297857224941253662109375
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 384.1000000000000227373675443232059478759765625,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-05T22:50:23+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.7691833000000087849912233650684356689453125
    },
    "last_point": {
        "ts": "2026-07-06T05:14:27+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769166699999999536885297857224941253662109375
    }
}

{
    "radius_m": 5.5,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "points": 48,
    "centroid": {
        "lat": 46.62397287708331106159675982780754566192626953125,
        "lon": 142.769178122916628126404248178005218505859375
    },
    "bbox": {
        "min_lat": 46.62393329999999735946403234265744686126708984375,
        "min_lon": 142.769149999999996225596987642347812652587890625,
        "max_lat": 46.6240149999999999863575794734060764312744140625,
        "max_lon": 142.769216699999986985858413390815258026123046875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 5.5,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "points": 48,
    "centroid": {
        "lat": 46.62397287708331106159675982780754566192626953125,
        "lon": 142.769178122916628126404248178005218505859375
    },
    "bbox": {
        "min_lat": 46.62393329999999735946403234265744686126708984375,
        "min_lon": 142.769149999999996225596987642347812652587890625,
        "max_lat": 46.6240149999999999863575794734060764312744140625,
        "max_lon": 142.769216699999986985858413390815258026123046875
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 229.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 172.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 10341,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T21:08:31+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 172 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 172 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6229536000000024387190933339297771453857421875,
            "lon": 142.76893929999999954816303215920925140380859375
        },
        "time_window": {
            "start_ts": "2026-07-05T21:08:31+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T03:45:11.362851+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 229.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 172.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 10341,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T21:08:31+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 172 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 172 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6229536000000024387190933339297771453857421875,
            "lon": 142.76893929999999954816303215920925140380859375
        },
        "time_window": {
            "start_ts": "2026-07-05T21:08:31+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T04:00:01.723935+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 18.60000000000000142108547152020037174224853515625,
    "duration_minutes": 342.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20524,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T21:23:28+00:00",
        "end": "2026-07-06T03:05:32+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 342 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b119m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 342 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 18.60000000000000142108547152020037174224853515625,
    "duration_minutes": 342.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20524,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T21:23:28+00:00",
        "end": "2026-07-06T03:05:32+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 342 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b119m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 342 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 50,
    "first_point": {
        "ts": "2026-07-05T21:50:23+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.76920000000001209627953357994556427001953125
    },
    "last_point": {
        "ts": "2026-07-06T04:20:28+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769149999999996225596987642347812652587890625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 50,
    "first_point": {
        "ts": "2026-07-05T21:50:23+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.76920000000001209627953357994556427001953125
    },
    "last_point": {
        "ts": "2026-07-06T04:20:28+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769149999999996225596987642347812652587890625
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}

{
    "radius_m": 5.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 50,
    "centroid": {
        "lat": 46.6239726259999684998547309078276157379150390625,
        "lon": 142.769178329999959942142595537006855010986328125
    },
    "bbox": {
        "min_lat": 46.62393329999999735946403234265744686126708984375,
        "min_lon": 142.769149999999996225596987642347812652587890625,
        "max_lat": 46.6240149999999999863575794734060764312744140625,
        "max_lon": 142.769216699999986985858413390815258026123046875
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 5.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 50,
    "centroid": {
        "lat": 46.6239726259999684998547309078276157379150390625,
        "lon": 142.769178329999959942142595537006855010986328125
    },
    "bbox": {
        "min_lat": 46.62393329999999735946403234265744686126708984375,
        "min_lon": 142.769149999999996225596987642347812652587890625,
        "max_lat": 46.6240149999999999863575794734060764312744140625,
        "max_lon": 142.769216699999986985858413390815258026123046875
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 17,
    "duration_minutes": 369,
    "overlap_duration_s": 22142,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T20:56:30+00:00",
        "end": "2026-07-06T03:05:32+00:00"
    },
    "points_count": {
        "vessel_a": 36,
        "vessel_b": 36
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 268m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 369 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 268m) for 369 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 17,
    "duration_minutes": 369,
    "overlap_duration_s": 22142,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T20:56:30+00:00",
        "end": "2026-07-06T03:05:32+00:00"
    },
    "points_count": {
        "vessel_a": 36,
        "vessel_b": 36
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 268m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 369 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 268m) for 369 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 230.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 4,
    "duration_minutes": 231.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 13880,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T20:09:32+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 59,
        "vessel_b": 59
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 231 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 231 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.62295199999999795181793160736560821533203125,
            "lon": 142.768937700000009272116585634648799896240234375
        },
        "time_window": {
            "start_ts": "2026-07-05T20:09:32+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T02:45:04.876365+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260705T081940_20260705T082009_003536_00645B_8B73_COG",
        "scene_datetime": "2026-07-05T08:19:40.361558Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 141.153686999999990803189575672149658203125,
            "min_lat": 45.22715000000000173940861714072525501251220703125,
            "max_lon": 144.841063999999988709532772190868854522705078125,
            "max_lat": 47.37374899999999655619831173680722713470458984375
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        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_851156_thumbnail_20260706024509.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_851156_thumbnail_20260706024509.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 230.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 4,
    "duration_minutes": 231.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 13880,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T20:09:32+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 59,
        "vessel_b": 59
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 231 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 231 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
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            "lon": 142.768937700000009272116585634648799896240234375
        },
        "time_window": {
            "start_ts": "2026-07-05T20:09:32+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T02:45:10.643419+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260705T081940_20260705T082009_003536_00645B_8B73_COG",
        "scene_datetime": "2026-07-05T08:19:40.361558Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 141.153686999999990803189575672149658203125,
            "min_lat": 45.22715000000000173940861714072525501251220703125,
            "max_lon": 144.841063999999988709532772190868854522705078125,
            "max_lat": 47.37374899999999655619831173680722713470458984375
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_851157_thumbnail_20260706024513.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_851157_thumbnail_20260706024513.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 230.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 273.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 16420,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T19:27:12+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 68,
        "vessel_b": 68
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 274 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 274 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
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            "lon": 142.768938700000006747359293513000011444091796875
        },
        "time_window": {
            "start_ts": "2026-07-05T19:26:22+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T02:00:02.359195+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260705T081940_20260705T082009_003536_00645B_8B73_COG",
        "scene_datetime": "2026-07-05T08:19:40.361558Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 141.153686999999990803189575672149658203125,
            "min_lat": 45.22715000000000173940861714072525501251220703125,
            "max_lon": 144.841063999999988709532772190868854522705078125,
            "max_lat": 47.37374899999999655619831173680722713470458984375
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850814_thumbnail_20260706020006.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850814_thumbnail_20260706020006.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
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    "min_distance_m": 205.30000000000001136868377216160297393798828125,
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    "speed_summary": {
        "vessel_a": {
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        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T19:27:12+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 68,
        "vessel_b": 68
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 274 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 274 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.62294870000000202026058104820549488067626953125,
            "lon": 142.768938700000006747359293513000011444091796875
        },
        "time_window": {
            "start_ts": "2026-07-05T19:26:22+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T02:00:07.939952+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260705T081940_20260705T082009_003536_00645B_8B73_COG",
        "scene_datetime": "2026-07-05T08:19:40.361558Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 141.153686999999990803189575672149658203125,
            "min_lat": 45.22715000000000173940861714072525501251220703125,
            "max_lon": 144.841063999999988709532772190868854522705078125,
            "max_lat": 47.37374899999999655619831173680722713470458984375
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850815_thumbnail_20260706020011.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850815_thumbnail_20260706020011.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 266.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 18.5,
    "duration_minutes": 377,
    "overlap_duration_s": 22621,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
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        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T19:32:28+00:00",
        "end": "2026-07-06T01:49:29+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 377 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b118m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 377 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 266.80000000000001136868377216160297393798828125,
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    "duration_minutes": 377,
    "overlap_duration_s": 22621,
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    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
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        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T19:32:28+00:00",
        "end": "2026-07-06T01:49:29+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 377 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b118m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 377 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 55,
    "first_point": {
        "ts": "2026-07-05T19:53:22+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769166699999999536885297857224941253662109375
    },
    "last_point": {
        "ts": "2026-07-06T02:26:26+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769166699999999536885297857224941253662109375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 55,
    "first_point": {
        "ts": "2026-07-05T19:53:22+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769166699999999536885297857224941253662109375
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    "last_point": {
        "ts": "2026-07-06T02:26:26+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769166699999999536885297857224941253662109375
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}

{
    "radius_m": 7.5999999999999996447286321199499070644378662109375,
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    "points": 55,
    "centroid": {
        "lat": 46.62397175090908518768628709949553012847900390625,
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        "max_lon": 142.769216699999986985858413390815258026123046875
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}

{
    "radius_m": 7.5999999999999996447286321199499070644378662109375,
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    "points": 55,
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        "min_lat": 46.62391670000000232221282203681766986846923828125,
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    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 17.699999999999999289457264239899814128875732421875,
    "duration_minutes": 389.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23343,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.25,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
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        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T18:58:29+00:00",
        "end": "2026-07-06T01:27:32+00:00"
    },
    "points_count": {
        "vessel_a": 33,
        "vessel_b": 33
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 389 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b118m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 389 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 17.699999999999999289457264239899814128875732421875,
    "duration_minutes": 389.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23343,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.25,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T18:58:29+00:00",
        "end": "2026-07-06T01:27:32+00:00"
    },
    "points_count": {
        "vessel_a": 33,
        "vessel_b": 33
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 267m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 389 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b118m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 267m) for 389 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 56,
    "first_point": {
        "ts": "2026-07-05T18:53:21+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769166699999999536885297857224941253662109375
    },
    "last_point": {
        "ts": "2026-07-06T01:29:25+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769166699999999536885297857224941253662109375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 56,
    "first_point": {
        "ts": "2026-07-05T18:53:21+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769166699999999536885297857224941253662109375
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    "last_point": {
        "ts": "2026-07-06T01:29:25+00:00",
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        "lon": 142.769166699999999536885297857224941253662109375
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}

{
    "radius_m": 7.79999999999999982236431605997495353221893310546875,
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    "bbox": {
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        "max_lon": 142.769216699999986985858413390815258026123046875
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    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 7.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 56,
    "centroid": {
        "lat": 46.62397374107140279875238775275647640228271484375,
        "lon": 142.769175869642793941238778643310070037841796875
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    "bbox": {
        "min_lat": 46.62391670000000232221282203681766986846923828125,
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    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 230.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 3.5,
    "duration_minutes": 358.3999999999999772626324556767940521240234375,
    "overlap_duration_s": 21501,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T18:02:31+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 87,
        "vessel_b": 87
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 358 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 358 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.6229531999999977642801241017878055572509765625,
            "lon": 142.76893699999999398642103187739849090576171875
        },
        "time_window": {
            "start_ts": "2026-07-05T18:02:31+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T00:30:19.073567+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260705T081940_20260705T082009_003536_00645B_8B73_COG",
        "scene_datetime": "2026-07-05T08:19:40.361558Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 141.153686999999990803189575672149658203125,
            "min_lat": 45.22715000000000173940861714072525501251220703125,
            "max_lon": 144.841063999999988709532772190868854522705078125,
            "max_lat": 47.37374899999999655619831173680722713470458984375
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850269_thumbnail_20260706003026.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850269_thumbnail_20260706003026.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 230.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 3.5,
    "duration_minutes": 358.3999999999999772626324556767940521240234375,
    "overlap_duration_s": 21501,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T18:02:31+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 87,
        "vessel_b": 87
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 358 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 358 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.6229531999999977642801241017878055572509765625,
            "lon": 142.76893699999999398642103187739849090576171875
        },
        "time_window": {
            "start_ts": "2026-07-05T18:02:31+00:00",
            "end_ts": "2026-07-06T00:00:52+00:00"
        },
        "searched_at": "2026-07-06T00:30:27.219107+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260705T081940_20260705T082009_003536_00645B_8B73_COG",
        "scene_datetime": "2026-07-05T08:19:40.361558Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 141.153686999999990803189575672149658203125,
            "min_lat": 45.22715000000000173940861714072525501251220703125,
            "max_lon": 144.841063999999988709532772190868854522705078125,
            "max_lat": 47.37374899999999655619831173680722713470458984375
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850270_thumbnail_20260706003042.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_850270_thumbnail_20260706003042.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 16.5,
    "duration_minutes": 313,
    "overlap_duration_s": 18781,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T17:26:29+00:00",
        "end": "2026-07-05T22:39:30+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 268m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 313 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b116m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 268m) for 313 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 197.099999999999994315658113919198513031005859375,
    "avg_distance_m": 267.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 16.5,
    "duration_minutes": 313,
    "overlap_duration_s": 18781,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T17:26:29+00:00",
        "end": "2026-07-05T22:39:30+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 197m, avg 268m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 313 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b116m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZAPRAVSHCHIK 05 and FLAGMAN) maintained close proximity (min 197m, avg 268m) for 313 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 230.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 3.5,
    "duration_minutes": 376.5,
    "overlap_duration_s": 22591,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T17:44:21+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 90,
        "vessel_b": 90
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 376 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 376 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 205.30000000000001136868377216160297393798828125,
    "avg_distance_m": 230.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 3.5,
    "duration_minutes": 376.5,
    "overlap_duration_s": 22591,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-05T17:44:21+00:00",
        "end": "2026-07-06T00:00:52+00:00"
    },
    "points_count": {
        "vessel_a": 90,
        "vessel_b": 90
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 205m, avg 230m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 376 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 205m, avg 230m) for 376 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-07-05T17:53:21+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769166699999999536885297857224941253662109375
    },
    "last_point": {
        "ts": "2026-07-06T00:26:24+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769166699999999536885297857224941253662109375
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-07-05T17:53:21+00:00",
        "lat": 46.6239666999999968766132951714098453521728515625,
        "lon": 142.769166699999999536885297857224941253662109375
    },
    "last_point": {
        "ts": "2026-07-06T00:26:24+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769166699999999536885297857224941253662109375
    }
}