Seismic survey in progress until 04 may by M/V bgp challenger and M/V sea moby dick towing 12000 meter long…
North Atlantic Ocean · HYDROLANT 1042/16
What this record establishes
Archived notice · 2016-05-04 01:19Z
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 N 383/16 012015Z MAY 16.. Issued 2016-05-01 20:40Z. 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 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 North Atlantic Ocean →
- issued
- 2016-05-01 20:40Z
- status
- Archived notice
- authority
- NAVAREA V N 383/16 012015Z MAY 16.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V N
- sea
- North Atlantic Ocean
- position
- 2.037, -46.342
- vessels
- M/V BGP CHALLENGER · 82 messagesM/V SEA MOBY DICK · 6 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-NORTH COAST. DNC 01. 1. SEISMIC SURVEY IN PROGRESS UNTIL 04 MAY BY M/V BGP CHALLENGER AND M/V SEA MOBY DICK TOWING 12000 METER LONG CABLE IN AREA BOUND BY 03-00.56N 045-52.22W, 01-45.15N 046-52.17W, 01-21.01N 046-17.24W. 2. CANCEL HYDROLANT 1022/16. 3. CANCEL THIS MSG 05 MAY 16.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- 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.
- 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
227 within 180 nm since 1999 · 2 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.
- Underwater operations 1000Z to 2000Z daily until 13 sep by cableship ile d' yeu along trackline joining…2026-08-14
- Underwater operations 1000Z to 2000Z daily until 13 sep by cableship ile d' yeu along trackline joining…2026-08-14
- Seismic survey in progress until 05 jun by M/V polarcus alima towing 12 8100 meter long cables in area bound…2016-05-10
- Seismic survey in progress until 10 may by M/V bgp challenger and M/V sea moby dick towing 12000 meter long…2016-05-06
- Seismic survey in progress until 07 may by M/V bgp challenger and M/V sea moby dick towing 12000 meter long…2016-05-04
- Seismic survey in progress until 01 may by M/V bgp challenger and M/V sea moby dick towing 12000 meter long…2016-04-29
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 2026-10-01 11:37Z; 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.