Seismic survey in progress until further notice by M/V northern explorer towing 10000 meter long cable in…
South Atlantic Ocean · HYDROLANT 144/13
What this record establishes
Archived notice · 2013-02-16 11:04Z
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 VII 23/13 161107Z JAN 13.. Issued 2013-01-16 19:49Z. 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
- 2013-01-16 19:49Z
- status
- Archived notice
- authority
- NAVAREA VII 23/13 161107Z JAN 13.
- NAVAREA
- NAVAREA VII · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -32.224, 15.136
- vessel
- M/V NORTHERN EXPLORER · 69 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN SOUTH ATLANTIC. SOUTH AFRICA-WEST COAST. 1. SEISMIC SURVEY IN PROGRESS UNTIL FURTHER NOTICE BY M/V NORTHERN EXPLORER TOWING 10000 METER LONG CABLE IN AREA BOUND BY 31-02.7S 012-13.4E, 29-47.7S 014-34.6E, 29-47.1S 016-25.2E, 30-20.6S 017-13.3E, 33-04.5S 017-13.2E, 35-56.6S 015-13.3E. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 3010/12.
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.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- 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.
Collected reports in this area · cable & pipeline work
13 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 further notice by cableship ile de sein in 32-07.00S 013-53.00E2022-09-06
- Cable operations 24 jul thru 09 aug by cableship ile de sein in area bound by 32-10.70S 013-58.40E,…2022-07-19
- Cable operations 19 jun until further notice by cableship leon thevenin in area bound by 33-42.70S…2022-06-17
- Survey operations in progress until 21 feb by M/V bgp pioneer and M/V aquarius towing seven mile long…2021-02-05
- Survey operations in progress until 21 feb by M/V bgp pioneer and M/V aquarius towing seven mile long…2021-02-04
- Survey operations in progress until 16 feb by M/V bgp pioneer and M/V aquarius towing six mile long seismic…2021-01-25
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
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 02:01Z; 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.