Rankings derived from automated AIS analysis of ship-to-ship transfer patterns. Vessels and zones are ranked by frequency of detected STS encounters. High activity may indicate legitimate operations or patterns warranting investigation.
Top STS Counterpart Pairs
| # | Vessel Pair | Events | Avg Score | Last Seen |
|---|---|---|---|---|
| 1 | 34 | 93/100 | Jan 20, 2026 | |
| 2 | 34 | 85/100 | Jan 20, 2026 | |
| 3 | 34 | 83/100 | Jan 20, 2026 | |
| 4 | 3 | 91/100 | Jan 19, 2026 | |
| 5 | 3 | 82/100 | Jan 20, 2026 | |
| 6 | 1 | 88/100 | Jan 20, 2026 |
Pairs are ranked by number of detected STS encounters. Higher scores indicate stronger confidence in transfer activity.
Top Vessels by STS Activity
| # | Vessel | MMSI | STS Events | Last Active |
|---|---|---|---|---|
| 1 | AZOV | 273456730 |
68 | Jan 20, 2026 |
| 2 | FLAGMAN | 273443820 |
68 | Jan 20, 2026 |
| 3 | PHOENIX II | 273356770 |
68 | Jan 20, 2026 |
| 4 | WHITE CONDOR I ⚠️ | 307026000 |
3 | Jan 20, 2026 |
| 5 | REVANCHE ⚠️ | 273612850 |
3 | Jan 19, 2026 |
| 6 | ALMAZNYI PUT | 273369250 |
3 | Jan 19, 2026 |
| 7 | ORWELL | 636025970 |
3 | Jan 20, 2026 |
| 8 | SATURN A | 305007000 |
1 | Jan 20, 2026 |
| 9 | REVOLINER | 352003819 |
1 | Jan 20, 2026 |
Vessels ranked by total STS encounters across all counterparties.
Top Zones by STS Activity
| # | Zone | STS Events | Unique Vessels | Last Activity |
|---|---|---|---|---|
| 1 | Prigorodnoye/Sakhalin LNG | 102 | 3 | Jan 20, 2026 |
| 2 | Sakhalin South Approach | 102 | 3 | Jan 20, 2026 |
| 3 | Ust-Luga Terminal Complex | 6 | 2 | Jan 19, 2026 |
| 4 | Gulf of Finland Exit | 6 | 2 | Jan 20, 2026 |
| 5 | osint_cyprus_south_sts | 2 | 2 | Jan 20, 2026 |
Zones ranked by STS event density. Click zone names to view all events in that area.
About this data: These rankings are derived from automated AIS analysis. High activity levels may indicate legitimate operations or patterns warranting investigation. Always verify with additional sources before drawing conclusions. Read the methodology.