Dark Fleet Watch

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BORIS SOKOLOV

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IMO9817315
MMSI209387000
FlagCYP
Type—
Callsign5BBS5
Last position23 October 2026 04:25 UTC

Observation status

Last AIS transmission observed 14 days ago. This length of silence is notable for a vessel of this type and warrants observation.

Activity summary

Observations recorded472
First observed15 October 2026
Most recent observation23 October 2026

Last known position

Coordinates62.4288° N, 4.1894° E
Date last observed23 October 2026

This vessel was last observed transmitting AIS from the open ocean area before going dark. Subsequent movements are not visible to Dark Fleet Watch.

Track and movement

BORIS SOKOLOV silhouette

NO VERIFIED IMAGE
IMO 9817315 — vessel type silhouette

Dark Fleet Watch displays only photographs verified against the vessel's IMO. Where no verified photograph is held, a silhouette of the vessel's general type is shown in its place. IMO numbers are permanent identifiers; vessel names and flags can change through sale, reflag, or evasion of monitoring.

Live position, recent track, and proactive alerts are available with an analyst subscription. Contact contact@darkfleetwatch.com.

Sanctions and regulatory listings

GUR_UA designated 26 September 2026
GUR_UA designated 04 June 2026 · removed 25 September 2026

Recent AIS gaps

21 Oct 2026 09:59 UTC 40h 8m gap, travelled 505.0 nm
21 Oct 2026 04:55 UTC 5h 3m gap, travelled 66.4 nm
15 Oct 2026 18:47 UTC 50h 44m gap, travelled 577.8 nm
15 Oct 2026 08:39 UTC 8h 27m gap, travelled 35.3 nm
27 Sep 2026 01:31 UTC 74h 6m gap, travelled 923.9 nm
26 Sep 2026 02:54 UTC 22h 4m gap, travelled 279.5 nm
23 Sep 2026 16:20 UTC 5h 14m gap, travelled 59.1 nm
19 Sep 2026 16:08 UTC 92h 19m gap, travelled 1104.3 nm
31 Aug 2026 19:04 UTC 54h 54m gap, travelled 630.7 nm
30 Aug 2026 18:54 UTC 18h 2m gap, travelled 239.4 nm