Underwater operations in progress until further notice by M/V kommandor jack vicinity of trackline joining…
North Sea · HYDROLANT 799/01
What this record establishes
Archived notice · 2001-03-11 16:05Z
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 591/01 092116Z MAR 01. Issued 2001-03-10 01:30Z. 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 Sea. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
- issued
- 2001-03-10 01:30Z
- status
- Archived notice
- authority
- WZ 591/01 092116Z MAR 01
- issued by
- WZ
- sea
- North Sea
- position
- 55.300, -1.268
- vessel
- M/V KOMMANDOR JACK · 51 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V KOMMANDOR JACK VICINITY OF TRACKLINE JOINING 55-00N 001-20W, 55-02N 001-12W, 55-10N 001-09W, 55-40N 001-26W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 774/01.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
Collected reports in this area · survey operations
336 within 180 nm since 1999 · 1 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 further notice by M/V zwerver I in area bound by 53-34.50N…2026-09-14
- Survey operations in progress until 25 may by M/V ramform tethys towing 12 8000 meter long cables in area…2024-04-22
- Survey operations in progress until further notice by M/V sw amundsen towing seven 2200 meter long cables in…2024-04-18
- Survey operations in progress until further notice by M/V pxgeo 2 towing ten 4500 meter long cables in area…2023-08-16
- Survey operations in progress until further notice by M/V kommandor towing 1200 meter long cable in area…2022-10-27
- Survey operations in progress until further notice by M/V sw bly towing 12 5000 meter long cables in area…2022-09-04
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 2026-10-02 23:05Z; 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.