Survey operations by M/V vyacheslavtikhonov towing 4500 meter long cable in areas bound by: a. in progress…
Sea of Okhotsk · HYDROPAC 2189/18
What this record establishes
Archived notice · 2018-06-23 21:18Z
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) · NAVAREA XIII 42/18 130903Z JUN 18.. Issued 2018-06-13 10:18Z. 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
- Sea of Okhotsk. 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
Current notices and reporting history in the Sea of Okhotsk →
- issued
- 2018-06-13 10:18Z
- status
- Archived notice
- authority
- NAVAREA XIII 42/18 130903Z JUN 18.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- Sea of Okhotsk
- position
- 52.924, 143.623
- vessel
- M/V VYACHESLAVTIKHONOV
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF OKHOTSK.
SAKHALIN.
DNC 24.
1. SURVEY OPERATIONS BY M/V VYACHESLAVTIKHONOV
TOWING 4500 METER LONG CABLE IN AREAS BOUND BY:
A. IN PROGRESS UNTIL 18 JUN
52-33.0N 143-26.4E, 53-15.0N 143-19.8E,
53-15.0N 143-49.2E, 52-59.9N 143-52.3E,
52-36.2N 143-54.1E, 52-36.3N 143-37.8E.
B. IN PROGRESS UNTIL 18 JUL
52-39.0N 143-32.4E, 52-39.7N 143-31.2E,
52-46.6N 143-29.6E, 52-47.0N 143-29.8E,
52-50.5N 143-29.0E, 52-50.7N 143-28.6E,
52-58.8N 143-26.7E, 52-59.2N 143-31.1E,
52-58.2N 143-32.8E, 52-56.7N 143-33.2E,
52-54.5N 143-35.7E, 52-39.6N 143-39.2E,
52-38.4N 143-36.9E.
FOUR MILE BERTH REQUESTED.
2. CANCEL THIS MSG 19 JUL 18.
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.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
138 within 180 nm since 2000 · 5 in the last 12 months · 2 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.
- Survey operations in progress until 25 oct by M/V fyodor kovrov in area bound by 53-46.10N 141-20.00E,…2026-09-19
- Survey operations in progress until 25 oct by M/V fyodor kovrov in area bound by 53-55.97N 142-53.27E,…2026-09-15
- Survey operations in progress until 25 oct by M/V fyodor kovrov in areas bound by: a. 53-55.97N 142-53.27E,…2026-09-14
- Underwater operations 25 may thru 31 dec in area bound by 51-34.92N 143-24.27E, 51-34.90N 144-06.22E,…2026-05-22
- Underwater operations 01 may thru 31 oct in areas bound by: a. 51-27.95N 143-26.72E, 51-29.25N 143-45.52E,…2026-04-23
- Survey operations 25 jun until further notice by vessels in area bound by 52-37.78N 143-52.27E, 52-38.92N…2025-06-24
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
- Underwater operations 01 may thru 31 oct in areas bound by: a. 51-27.95N 143-26.72E, 51-29.25N 143-45.52E,…Surveys · 88.5 nm
- Wave rider buoy established in 51-22.54N 144-14.17ENav aids · 95.7 nm
- Underwater operations 25 may thru 31 dec in area bound by 51-34.92N 143-24.27E, 51-34.90N 144-06.22E,…Surveys · 106.1 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 15:40Z; 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.