CHRYSTAL SKY

IMO 9334569

⭐ Vessel Spotlight — 2026-08-25 ✓ Not Sanctioned
Rank: #6 of 3,270 STS detections: 1 Loiter: 299 AIS gap events: 5 Zone dwell: 464 90-day AIS-derived behavioral indicators

CHRYSTAL SKY was selected as Vessel Spotlight due to its ranking of #6 among 3,270 monitored vessels, with key metrics over the past 90 days including 1 STS proximity event, 5 AIS gaps, 299 loitering events, and 464 zone dwell events. The vessel was detected in the vicinity of the Ust-Luga Terminal Complex but no direct terminal visits were recorded during this period. The top operating zones included Baltic Exit/Tallinn Approach, Bosphorus/Dardanelles Approach, and Danish Straits/Skagerrak. These observations are based on AIS-derived behavioral indicators.

Vessel information

Vessel Name CHRYSTAL SKY
IMO Number 9334569
MMSI 538004215
Vessel Type Tanker
Flag 🇲🇭 Marshall Islands
Call Sign V7VU5
Length 228 m
Beam 32 m
Gross Tonnage 40,865 GT
Build Year 2008

Movement & AIS Track

The vessel CHRYSTAL SKY was detected in the Baltic Exit/Tallinn Approach zone most frequently, with 313 events recorded, including 160 zone dwell and 153 loiter events. It was also detected in the Bosphorus/Dardanelles Approach zone with 271 events, which included 154 zone dwell, 114 loiter, and 1 STS proximity event. Additionally, the vessel was detected in the vicinity of the Ust-Luga Terminal Complex with 27 events, though no direct terminal visits were recorded during this period.

ZoneEventsTypesFirst SeenLast Seen
Baltic Exit/Tallinn Approach 313 zone_dwell: 160, loiter: 153 Jul 1, 2026 Jul 25, 2026
Bosphorus/Dardanelles Approach 271 zone_dwell: 154, loiter: 114, ais_gap: 2, sts: 1 May 7, 2026 Aug 25, 2026
Danish Straits/Skagerrak 148 zone_dwell: 81, loiter: 67 Apr 21, 2026 Jul 29, 2026
Istanbul Black Sea Surveillance Zone 57 zone_dwell: 34, loiter: 23 Jun 14, 2026 Aug 18, 2026
Ust-Luga Terminal Complex 27 zone_dwell: 17, loiter: 8, ais_gap: 2 Jul 7, 2026 Jul 25, 2026
Central Mediterranean Sanctions Monitoring Zone 14 zone_dwell: 14 Apr 25, 2026 Jun 17, 2026
English Channel Surveillance Zone 11 zone_dwell: 11 Jul 30, 2026 Jul 30, 2026
Central Mediterranean Monitoring Zone 9 zone_dwell: 9 Jun 19, 2026 Jun 20, 2026
Eastern Aegean Monitoring Zone 7 zone_dwell: 7 Apr 27, 2026 Apr 27, 2026
Baltic Sea Surveillance Zone 7 zone_dwell: 7 Apr 24, 2026 Apr 25, 2026
discovered_008 6 zone_dwell: 6 Jul 25, 2026 Jul 26, 2026
North Sea Surveillance Zone 6 zone_dwell: 6 Apr 25, 2026 Jun 14, 2026
Unknown Maritime Surveillance Zone 6 zone_dwell: 6 Apr 26, 2026 Apr 26, 2026
North Sea Surveillance Zone 5 zone_dwell: 5 Jul 30, 2026 Jul 30, 2026
discovered_107 5 zone_dwell: 5 Jul 29, 2026 Jul 29, 2026

STS Proximity Partners

CHRYSTAL SKY recorded one STS proximity detection with one distinct partner vessel. The partner vessel detected in proximity was SEA JAGUAR, which was not sanctioned. The proximity event occurred in the Bosphorus region.

🏳️ SEA JAGUAR
1 events Not Sanctioned

Ownership & Management

Registered Owner
CHRYSTAL SKY MARITIME LTD
C/O: Executive Ship Management DMCC Unit 3901, JBC4, Plot JLT-PH1-N3A, Jumeirah Lakes Towers, Dubai, United Arab Emirates.
ISM Manager
EXECUTIVE SHIP MANAGEMENT DMCC
Unit 3901, JBC4, Plot JLT-PH1-N3A, Jumeirah Lakes Towers, Dubai, United Arab Emirates.
Ship Manager
EXECUTIVE SHIP MANAGEMENT DMCC
Unit 3901, JBC4, Plot JLT-PH1-N3A, Jumeirah Lakes Towers, Dubai, United Arab Emirates.
Commercial Manager
EXECUTIVE SHIP MANAGEMENT DMCC
Unit 3901, JBC4, Plot JLT-PH1-N3A, Jumeirah Lakes Towers, Dubai, United Arab Emirates.
🏢
CHRYSTAL SKY MARITIME LTD

CHRYSTAL SKY MARITIME LTD is a United Arab Emirates maritime company based in Dubai that is listed as the registered owner/manager of the tanker CHRYSTAL SKY. Public maritime listings indicate it manages a single-vessel fleet focused on tankers.

Fleet1 vessel(s)
Beneficial OwnerUnknown. The gathered sources identify the company as being c/o Executive Ship Management DMCC in Dubai, but do not disclose beneficial owners, parent companies, or controllers.
SanctionsCHRYSTAL SKY (IMO 9334569) is listed by Ukraine’s sanctions/war-ships portal as part of the shadow fleet and as transporting Russian crude oil/petroleum products in violation of sanctions and other restrictions. The vessel entry lists Chrystal Sky Maritime Ltd c/o Executive Ship Management DMCC as ship owner/registered owner. No separate sanctions designation or enforcement action against the company itself was found in the gathered sources.

⚠ Red Flags

  • Single-vessel company structure
  • Vessel CHRYSTAL SKY is listed in a sanctions/shadow-fleet database for Russian oil transport
  • Company is tied to a c/o maritime services address in Dubai
  • Public sources do not disclose beneficial ownership
🏢
EXECUTIVE SHIP MANAGEMENT DMCC

EXECUTIVE SHIP MANAGEMENT DMCC is a Dubai-based maritime ship management company associated with vessel management, including ISM and commercial management functions. Public maritime databases also link it to the vessel CHRYSTAL SKY and indicate it manages a small fleet of tankers and gas carriers.[6][3]

Fleet8 vessel(s)
Beneficial OwnerUnknown. The available sources identify EXECUTIVE SHIP MANAGEMENT DMCC as a manager and commercial manager, and separately identify CHRYSTAL SKY MARITIME LTD as the registered owner of CHRYSTAL SKY, but no verified beneficial owner or parent company was found.[1][3][6]
SanctionsNo direct sanctions designation or enforcement action was found for EXECUTIVE SHIP MANAGEMENT DMCC itself in the available sources. However, Ukrainian sanctions/shadow-fleet reporting identifies CHRYSTAL SKY as part of a shadow-fleet entry and lists EXECUTIVE SHIP MANAGEMENT DMCC as commercial ship manager and safety management manager as of 2025-08-12.[3]

⚠ Red Flags

  • Linked in Ukrainian shadow-fleet reporting for CHRYSTAL SKY as commercial and safety manager[3]
  • Public database records show a very small fleet, which can be consistent with single-asset management structures[1][6]
  • No verified beneficial ownership disclosed in the available sources

Name, Flag & Ownership History

Name Changes (4)
  • Nov 1, 2022
    CHRYSTAL SKY
  • Apr 1, 2015
    Polar Unicorn
  • Jun 1, 2010
    STI Heritage
  • Jan 1, 2008
    Sanko Heritage
Flag Changes (2)
  • Mar 1, 2011
    🇲🇭 Marshall Islands
  • Jan 1, 2008
    🇱🇷 Liberia
DateCompanyRole
Aug 12, 2025EXECUTIVE SHIP MANAGEMENT DMCCISM Manager
Aug 12, 2025EXECUTIVE SHIP MANAGEMENT DMCCShip manager/Commercial manager
Nov 30, 2022EXECUTIVE SHIP MANAGEMENTISM Manager
Nov 25, 2022EXECUTIVE SHIP MANAGEMENTShip manager/Commercial manager
Nov 25, 2022CHRYSTAL SKY MARITIME LTDRegistered owner
Nov 25, 2022UNKNOWNISM Manager
Jan 20, 2022POLAR UNICORN NAVIGATION LLCRegistered owner
Apr 7, 2015PRIME TANKER MANAGEMENT INCShip manager/Commercial manager
Apr 7, 2015POLAR UNICORN SHIPPING LLCRegistered owner
Apr 7, 2015PRIME TANKER MANAGEMENT INCISM Manager
Mar 28, 2011SCORPIO SHIP MANAGEMENT SAMISM Manager
Jun 7, 2010SCORPIO COMMERCIAL MANAGEMENTShip manager/Commercial manager
Nov 25, 2009COLUMBIA SHIPMANAGEMENT-GEUISM Manager
Jan 8, 2008COLUMBIA SHIPMANAGEMENT-GEUShip manager/Commercial manager
Jan 3, 2007COLUMBIA SHIPMANAGEMENT-GEUISM Manager

Media Mentions

Classification & Safety

American Bureau of Shipping (IACS) Delivered
36
Total Inspections
0
Detentions

Disclaimer

This vessel profile is compiled from publicly available information sources including maritime databases, government sanctions lists, and AIS position data. Information may be incomplete, delayed, or contain inaccuracies.

This content is for informational purposes only and does not constitute legal, financial, or compliance advice. FleetLeaks makes no warranties regarding the accuracy or completeness of the information presented. Users should independently verify all information before making decisions.

Data Scope & Currency
This dossier reflects automated analysis of publicly available data sources as of August 25, 2026 (UTC). FleetLeaks does not assert intent or wrongdoing. Observations are derived from AIS behavioral signals, registry records, and other open sources, each subject to inherent latency and reporting limitations.

Data Refresh
This dossier can be re-generated using the same automated pipeline with the most current available data. A refresh re-executes the standard selection, enrichment, and analysis process and does not alter methodology or thresholds. To request a refreshed version of this dossier, please contact us. A nominal fee may apply to cover compute and data access costs.

Generated: 2026-08-25T10:03:40.158677Z