Seismic survey in progress until 01 may by M/V bgp challenger and M/V sea moby dick towing 12000 meter long…
North Atlantic Ocean · HYDROLANT 997/16
What this record establishes
Archived notice · 2016-04-29 00:50Z
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 366/16 262125Z APR 16.. Issued 2016-04-27 05:10Z. 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
- 2016-04-27 05:10Z
- status
- Archived notice
- authority
- NAVAREA V N 366/16 262125Z APR 16.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V N
- sea
- North Atlantic Ocean
- position
- 3.657, -46.794
- 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 01 MAY BY M/V BGP CHALLENGER AND M/V SEA MOBY DICK TOWING 12000 METER LONG CABLE IN AREA BOUND BY 02-51.59N 045-47.29W, 02-42.02N 047-47.29W, 04-38.26N 047-06.30W, 04-38.26N 046-01.20W, 03-33.22N 046-01.19W, 03-33.22N 047-00.11W. 2. CANCEL THIS MSG 02 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.
- 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
319 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 in area bound by 05-38.66N 047-18.27W, 06-36.00N…2020-01-29
- Cable operations in progress until further notice by M/V lida along trackline joining 04-40.14N 046-13.93W,…2020-01-20
- Cable operations 24 and 25 jan by by M/V lida along trackline joining 04-40.14N 046-13.93W, 05-38.66N…2020-01-20
- 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 04 may by M/V bgp challenger and M/V sea moby dick towing 12000 meter long…2016-05-01
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 08:22Z; 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.