Seismic survey in progress until 02 sep by M/V bulldog in area bound by 04-42S 036-57W, 04-42S 036-56W,…
South Atlantic Ocean · HYDROLANT 1936/02
What this record establishes
Archived notice · 2002-09-02 07:10Z
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 V 1077/02 310402Z AUG 02. Issued 2002-08-31 08:20Z. 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
- South Atlantic Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2002-08-31 08:20Z
- status
- Archived notice
- authority
- NAVAREA V 1077/02 310402Z AUG 02
- NAVAREA
- NAVAREA V · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -4.675, -36.902
- vessel
- M/V BULLDOG · 137 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SEISMIC SURVEY IN PROGRESS UNTIL 02 SEP BY M/V BULLDOG IN AREA BOUND BY 04-42S 036-57W, 04-42S 036-56W, 04-40S 036-51W, 04-39S 036-54W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 1923/02. 3. CANCEL THIS MSG 03 SEP.
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.
- 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 · cable & pipeline work
342 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.
- Cable operations in progress until 130259Z feb 21 by cableship ile de brehat and cableship peter faber along…2020-12-30
- Cable operations 300300Z nov to 130259Z feb 21 by cableship ile de brehat along trackline joining 03-44.36S…2020-11-29
- Underwater operations 1000Z to 2000Z daily 10 may thru 20 sep by cableship recorder and M/V saga badejo in…2018-08-10
- Underwater operations 1000Z to 2000Z daily 10 may thru 09 aug by cableship recorder and M/V saga badejo in…2018-05-10
- Seismic survey 19 thru 27 jan by M/V bgp challenger towing 10000 meter long cable in area bound by 04-09S…2017-01-18
- Seismic survey in progress until 26 feb by M/V ramform atlas towing 14 9000 meter long cables in area bound…2016-01-15
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
- Odas buoy bravo rn-l temporarily established until 20 oct in 04-53.00S 035-46.01WNav aids · 69 nm
- Odas buoy established in 05-09.46S 035-09.81WNav aids · 107.9 nm
Worldwide in the collected sources
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-03 06:35Z; 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.