Survey operations 28 aug until further notice by M/V nikolay trubyatchinsky towing 8500 meter long cable in…
East Siberian Sea · HYDROARC 181/23
What this record establishes
Archived notice · 2023-12-17 08:53Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · RUSSIA COASTAL WARNING EAST 8/23 231027Z AUG 23.. Issued 2023-08-23 11:13Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- East Siberian Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROARC 181/23 and this msglater cancellation notice
Current notices and reporting history in the East Siberian Sea →
- issued
- 2023-08-23 11:13Z
- status
- Archived notice
- authority
- RUSSIA COASTAL WARNING EAST 8/23 231027Z AUG 23.
- issued by
- RUSSIA COASTAL WARNING EAST
- sea
- East Siberian Sea
- position
- 73.374, 146.110
- vessel
- M/V NIKOLAY TRUBYATCHINSKY · 29 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EAST SIBERIAN SEA. LAPTEV SEA. RUSSIA. DNC 27. SURVEY OPERATIONS 28 AUG UNTIL FURTHER NOTICE BY M/V NIKOLAY TRUBYATCHINSKY TOWING 8500 METER LONG CABLE IN AREA BOUND BY 74-33.70N 134-54.10E, 74-43.30N 138-36.40E, 74-53.90N 143-32.00E, 74-58.80N 147-21.60E, 75-00.80N 150-42.00E, 75-07.00N 151-03.00E, 74-05.70N 151-59.00E, 74-12.50N 153-04.70E, 75-20.00N 152-54.20E, 75-24.10N 153-09.50E, 75-50.40N 153-22.60E, 71-46.40N 158-35.70E, 71-42.00N 152-17.20E, 71-56.50N 150-08.40E, 72-16.60N 139-09.80E, 71-59.10N 136-21.80E, 72-23.10N 133-44.20E, 72-39.80N 134-09.80E, 73-44.80N 134-20.00E, 74-10.80N 135-00.30E. SEVEN MILE BERTH REQUESTED.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
Collected reports in this area · survey operations
1 within 180 nm since 2023 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 11:54Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.