Survey operations in progress until further notice by M/V sea explorer towing two mile long cable vicinity…
North Atlantic Ocean · HYDROLANT 1010/99
What this record establishes
Archived notice · 1999-05-26 10:10Z
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 947/99 181241Z MAY 99. Issued 1999-05-18 13:25Z. 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 parsed report position is 56.183, -9.750. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROLANT 1010/99, survey completedlater cancellation notice
Current notices and reporting history in the North Atlantic Ocean →
- issued
- 1999-05-18 13:25Z
- status
- Archived notice
- authority
- WZ 947/99 181241Z MAY 99
- issued by
- WZ
- sea
- North Atlantic Ocean
- position
- 56.183, -9.750
- vessel
- M/V SEA EXPLORER · 27 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V SEA EXPLORER TOWING TWO MILE LONG CABLE VICINITY 56-11N 009-45W. WIDE BERTH REQUESTED.
Reading this warning
- 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.
- 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
82 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.
- Underwater operations in progress until further notice by M/V normand frontier in vicinity of trackline…2020-10-25
- 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
- Underwater operations in progress until 26 oct by unmanned five meter M/V bauza in area within 12 miles of…2018-10-08
- Underwater operations 10 thru 21 sep during daylight hours by unmanned five meter M/V bauza in area within…2018-09-09
- Underwater operations in progress until 29 jul by unmanned five meter M/V bauza, yellow hull, in area within…2018-07-09
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 20:50Z; 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.