Underwater operations in progress until 07 apr in area bound by 58-19N 003-24W, 59-25N 003-24W, 59-25N…
North Atlantic Ocean · HYDROLANT 868/20
What this record establishes
Archived notice · 2020-04-08 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) · WZ 297/20 052232Z MAR 20.. Issued 2020-03-05 23:00Z. 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
- North Atlantic Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Current notices and reporting history in the North Atlantic Ocean →
- issued
- 2020-03-05 23:00Z
- status
- Archived notice
- authority
- WZ 297/20 052232Z MAR 20.
- issued by
- WZ
- sea
- North Atlantic Ocean
- position
- 58.867, -6.517
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH ATLANTIC. NORTH MINCH. SCOTLAND. DNC 19, DNC 20. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 07 APR IN AREA BOUND BY 58-19N 003-24W, 59-25N 003-24W, 59-25N 009-38W, 58-19N 009-38W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 08 APR 20.
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.
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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
58 within 180 nm since 1999 · 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.
- Survey operations in progress until further notice by M/V amazon conqueror towing 6500 meter long cables,…2023-05-29
- Survey operations in progress until further notice by M/V veritas viking in area within ten miles of…2022-05-02
- Underwater operations in progress until 050100Z jun in area bound by 56-38N 006-48W, 59-06N 006-48W, 59-06N…2020-05-03
- Underwater operations in progress until 012000Z nov by M/V sd northern river with submersible in area bound…2019-10-28
- Survey operations in progress until further notice by M/V havila subsea with submersible in area bound by…2019-09-03
- Underwater operations in progress until 26 oct by unmanned five meter M/V bauza in area within 12 miles of…2018-10-08
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 2026-10-01 16:39Z; 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.