Seismic survey in progress until further notice within three miles of 51-58.53N 005-51.72W
Celtic Sea · HYDROLANT 1681/04
What this record establishes
Archived notice · 2004-10-18 15:34Z
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 1262/04 180923Z OCT 04.. Issued 2004-10-18 10:00Z. 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
- Celtic Sea. The parsed report position is 51.975, -5.862 with a 3.0 nm radius. 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 1679/04, 1681/04 and this msglater cancellation notice
- issued
- 2004-10-18 10:00Z
- status
- Archived notice
- authority
- WZ 1262/04 180923Z OCT 04.
- issued by
- WZ
- sea
- Celtic Sea
- position
- 51.975, -5.862 · r 3.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEISMIC SURVEY IN PROGRESS UNTIL FURTHER NOTICE WITHIN THREE MILES OF 51-58.53N 005-51.72W. WIDE BERTH REQUESTED.
Reading this warning
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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 · cable & pipeline work
725 within 180 nm since 1998 · 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.
- Cable operations in progress until further notice by cableship ile d'ouessant in vicinity of trackline…2024-08-25
- Cable operations in progress until further notice by cableship detector along trackline joining 51-18.40N…2024-05-01
- Cable operations in progress until further notice by cableship detector along trackline joining 51-18.40N…2024-05-01
- Underwater operations in progress until further notice by cableship decisive in areas bound by: a. 50-31.50N…2024-04-25
- Cable operations in progress until further notice by cableship detector along trackline joining 49-11.80N…2024-04-13
- Underwater operations in progress until further notice by cableship decisive in area bound by 50-34.40N…2024-04-10
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
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-04 01:57Z; source collection times vary.
Cable ops
Cable laying, pipeline and seismic operations. All current cable & pipeline work →
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.