Survey operations in progress until 07 dec by M/V academic lazarev towing 8100 meter long cable in area…
Barentsz Sea · HYDROARC 275/23
What this record establishes
Archived notice · 2023-12-08 00:01Z
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 XX 165/23 271759Z OCT 23.. Issued 2023-10-27 18:22Z. 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
- Barentsz 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
- issued
- 2023-10-27 18:22Z
- status
- Archived notice
- self-cancels
- 2023-12-08 00:01Z
- authority
- NAVAREA XX 165/23 271759Z OCT 23.
- NAVAREA
- NAVAREA XX · named as the source of this relay
- sea
- Barentsz Sea
- position
- 76.939, 47.314
- vessel
- M/V ACADEMIC LAZAREV · 7 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BARENTS SEA. RUSSIA. DNC 22. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 07 DEC BY M/V ACADEMIC LAZAREV TOWING 8100 METER LONG CABLE IN AREA BOUND BY 78-47.64N 041-35.37E, 78-30.13N 049-53.78E, 76-50.96N 056-57.56E, 74-54.90N 050-30.78E, 75-49.57N 040-44.53E, 78-07.04N 039-36.69E. NINE MILE BERTH REQUESTED. 2. CANCEL HYDROARC 232/23. 3. CANCEL THIS MSG 080001Z DEC 23.
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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROARC
- The U.S. long-range warning series for the Arctic Ocean.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Collected reports in this area · survey operations
25 within 180 nm since 2013 · 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.
- Underwater operations in progress until 01 nov by vessel yauza in area bound by 80-19.18N 045-21.73E,…2023-10-08
- Survey operations 29 sep thru 01 nov by M/V academic lazarev towing 8100 meter cable in area bound by…2023-09-28
- Underwater operations 05 may thru 01 aug in 73-59.48N 046-42.64E2023-05-04
- Scientific mooring, at depth 15 meters, established until further notice in 74-45.96N 044-55.44E2022-08-01
- Survey operations in progress until further notice by M/V akvamarin in area bound by 75-04.4N 046-56.0E,…2022-05-20
- Underwater operations 162100Z to 312100Z dec by M/V northern wave and M/V sirius in area bound by 75-10N…2021-12-15
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
54 survey operations listed in force · see all
Record snapshot 2026-09-29 21:05Z; 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.