Oceanographic operations 200001Z sep to 011600Z oct by M/V hesperides along trackline joining 26-00N…
North Atlantic Ocean · HYDROLANT 2100/02
What this record establishes
Archived notice · 2002-10-01 17:00Z
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 327/02 191120Z SEP 02. Issued 2002-09-19 13:48Z. 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.
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2002-09-20 00:01Z | 2002-10-01 16:00Z | — | 279 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2002-09-19 13:48Z
- status
- Archived notice
- self-cancels
- 2002-10-01 17:00Z
- authority
- NAVAREA II 327/02 191120Z SEP 02
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 21.909, -23.216
- vessel
- M/V HESPERIDES · 31 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. OCEANOGRAPHIC OPERATIONS 200001Z SEP TO 011600Z OCT BY M/V HESPERIDES ALONG TRACKLINE JOINING 26-00N 026-00W, 21-00N 026-00W, 21-00N 017-15W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 011700Z OCT.
Reading this warning
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- 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.
- 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
6 within 180 nm since 2001 · 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 01 may until further notice by M/V kronprins haakon along trackline joining 17-00N…2019-04-27
- Underwater operations 231600Z to 242300Z may by M/V james cook vicinity 23-46N 024-08W2014-05-21
- Scientific moorings established in: a. 23-49.6N 024-05.9W2006-04-05
- Oceanographic operations 24 may thru 08 jun by M/V hesperides along trackline joining 26-00N 016-54W, 26-00N…2003-05-23
- Oceanographic operations by M/V poseidon: a. 03 thru 06 apr within ten miles of 21-00N 020-40W2001-03-31
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 07:06Z; 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.