Underwater operations 02 thru 12 aug by M/V pelagia and M/V triton vicinity of trackline between 46-20N…
Bay of Biscay · HYDROLANT 1700/02
What this record establishes
Archived notice · 2002-08-13 00:00Z
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 II 272/02 310845Z JUL 02; MRCC GRIS NEZ AOR-E EGC#908 311054Z JUL 02. Issued 2002-07-31 12:55Z. 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
- Bay of Biscay. 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
- 8 meter S/V hakuna matata, blue hull, two persons on board, overdue azores to francecancelled by this notice
Current notices and reporting history in the Bay of Biscay →
- issued
- 2002-07-31 12:55Z
- status
- Archived notice
- authority
- NAVAREA II 272/02 310845Z JUL 02; MRCC GRIS NEZ AOR-E EGC#908 311054Z JUL 02
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- Bay of Biscay
- position
- 46.333, -3.417
- vessels
- M/V PELAGIA · 26 messagesM/V TRITON · 6 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS 02 THRU 12 AUG BY M/V PELAGIA AND M/V TRITON VICINITY OF TRACKLINE BETWEEN 46-20N 005-00W AND 46-20N 001-50W. 2. CANCEL HYDROLANT 1666/02(51,37), VESSEL LOCATED. 3. CANCEL THIS MSG 13 AUG.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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.
- 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.
- 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
221 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.
- Scientific mooring established in 47-35.83N 007-23.92W2024-07-23
- Scientific mooring established in 44-10.03N 002-10.21W2024-07-21
- Scientific moorings, marked by buoys, established in: a. 45-51.50N 002-02.00W2024-07-10
- Survey operations 19 apr thru 28 may by M/V thalassa along trackline joining 47-50.31N 004-08.86W, 43-22.95N…2024-04-17
- Survey operations 09 thru 13 oct by M/V minibex in area bound by 45-44.78N 001-55.27W, 45-53.86N 002-02.56W,…2023-10-06
- Survey operations in progress until 060001Z oct by M/V pourquoi pas in area bound by 47-17.05N 009-17.05W,…2023-09-25
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
50 survey operations listed in force · see all
Record snapshot 2026-09-24 23:20Z; 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.