Seismic survey in progress until 15 oct by M/V bgp prospector in area bound by 04-28.3N 006-55.5W, 04-43.8N…
Gulf of Guinea · HYDROLANT 2285/12
What this record establishes
Archived notice · 2012-10-16 00:01Z
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 328/12 010236Z OCT 12.. Issued 2012-10-01 03:59Z. 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
- Gulf of Guinea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Current notices and reporting history in the Gulf of Guinea →
- issued
- 2012-10-01 03:59Z
- status
- Archived notice
- authority
- NAVAREA II 328/12 010236Z OCT 12.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- Gulf of Guinea
- position
- 4.281, -6.500
- vessel
- M/V BGP PROSPECTOR · 75 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH ATLANTIC. GULF OF GUINEA. COTE D'IVOIRE. 1. SEISMIC SURVEY IN PROGRESS UNTIL 15 OCT BY M/V BGP PROSPECTOR IN AREA BOUND BY 04-28.3N 006-55.5W, 04-43.8N 006-04.5W, 04-05.0N 006-04.7W, 03-50.3N 006-55.7W. SEVEN MILE BERTH REQUESTED. 2. CANCEL THIS MSG 16 OCT 12.
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.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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 · cable & pipeline work
42 within 180 nm since 2004 · 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 leon thevenin in area bound by 05-01.10N…2024-04-08
- Cable operations 071000Z apr until further notice by cableship leon thevenin in area bound by 05-01.10N…2024-04-07
- Cable operations 291200Z mar until further notice by cableship leon thevenin in area bound by 04-12.00N…2024-03-27
- Cable operations in progress until 112300Z sep by cableship ile d'aix along tracklines joining: a. 02-17.00N…2023-09-06
- Cable operations 120001Z aug to 062300Z sep by cableship ile d'aix along tracklines joining: a. 02-17.00N…2023-08-11
- Cable operations by cableship ile d'aix: a. 09 thru 11 aug along trackline joining 02-17.00N 003-44.00W,…2023-08-06
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 05:51Z; 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.