Seismic survey in progress until 25 aug by M/V discoverer II towing 12000 meter long cable in area bound by…
Gulf of Mexico · NAVAREA IV 693/15
What this record establishes
Archived notice · 2015-08-26 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) · MEXICO IV 162/15 202130Z AUG 15.. Issued 2015-08-20 22:12Z. 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 Mexico. 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 Gulf of Mexico →
- issued
- 2015-08-20 22:12Z
- status
- Archived notice
- authority
- MEXICO IV 162/15 202130Z AUG 15.
- NAVAREA
- NAVAREA IV
- issued by
- MEXICO IV
- sea
- Gulf of Mexico
- position
- 22.867, -96.335
- vessel
- M/V DISCOVERER II · 5 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF MEXICO. BAY OF CAMPECHE. MEXICO. 1. SEISMIC SURVEY IN PROGRESS UNTIL 25 AUG BY M/V DISCOVERER II TOWING 12000 METER LONG CABLE IN AREA BOUND BY 23-50.27N 097-44.50W, 25-05.33N 097-26.79W, 24-14.04N 094-50.29W, 22-21.83N 094-39.63W, 20-15.05N 096-33.27W, 21-06.85N 097-14.17W, 22-04.08N 097-43.02W, 23-50.27N 097-44.05W. WIDE BERTH REQUESTED. 2. CANCEL NAVAREA IV 686/15. 3. CANCEL THIS MSG 26 AUG 15.
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.
- 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.
- NAVAREA
- One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
- 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
28 within 180 nm since 2009 · 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.
- Pipeline operations in progress until further notice by M/V solitaire in 25-49.2N 096-38.2W2018-05-13
- Seismic survey 01 jul thru 15 sep by M/V bgp pioneer towing 11000 meter long cable in area bound by 26-00N…2016-06-27
- Seismic survey in progress until further notice by M/V northern explorer towing 12000 meter long cable in…2016-04-04
- Seismic survey in progress until 302000Z jan by M/V western neptune, M/V western patriot, M/V wg columbus…2016-01-26
- Seismic survey in progress until further notice by M/V osprey explorer towing 12000 meter long cable in area…2015-10-22
- Seismic survey in progress until 06 sep by M/V bm discoverer 2 towing 12000 meter long cable in area bound…2015-09-01
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
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 15:41Z; 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.