Oceanographic operations 01 thru 05 mar by M/V poseidon along trackline joining 29-10N 022-00W, 29-10N…
North Atlantic Ocean · HYDROLANT 462/02
What this record establishes
Archived notice · 2002-03-06 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 78/02 260950Z FEB 02. Issued 2002-02-26 11:40Z. 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 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
Current notices and reporting history in the North Atlantic Ocean →
- issued
- 2002-02-26 11:40Z
- status
- Archived notice
- authority
- NAVAREA II 78/02 260950Z FEB 02
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 29.124, -17.812
- vessel
- M/V POSEIDON · 64 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. OCEANOGRAPHIC OPERATIONS 01 THRU 05 MAR BY M/V POSEIDON ALONG TRACKLINE JOINING 29-10N 022-00W, 29-10N 014-50W, 28-35N 013-45W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 338/02. 3. CANCEL THIS MSG 06 MAR.
Reading this warning
- 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.
- 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
30 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 082359Z feb by M/V ramon margalef in area within four miles of 28-00.00N…2024-02-02
- Survey operations in progress until 090800Z feb by M/V sarmiento de gamboa in area bound by 28-34.70N…2024-01-28
- Survey operations 221900Z jan thru 010800Z feb by M/V sarmiento de gamboa in area bound by 28-16.80N…2024-01-21
- Underwater operations 261500Z thru 281300Z feb in area within 7 miles of 29-10.00N 015-29.00W2023-02-26
- Survey operations in progress until 25 feb by M/V ramon margalef in vicinity 27-37.00N 017-59.00W2023-02-24
- Survey operations in progress until 24 feb by M/V ramon margalef in vicinity 27-37.00N 017-59.00W2023-02-20
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
55 survey operations listed in force · see all
Record snapshot 2026-10-02 04:34Z; 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.