Cable ops

Seismic survey in progress until 31 may by M/V ggs atlantic towing 10050 meter long cable in area bound by…

Gulf of Mexico · NAVAREA IV 117/11

What this record establishes

Archived notice · 2011-05-28 15:08Z

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) · GGS ATLANTIC 011812Z APR 11.. Issued 2011-04-01 19:54Z. 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
2011-04-01 19:54Z
status
Archived notice
authority
GGS ATLANTIC 011812Z APR 11.
NAVAREA
NAVAREA IV
issued by
GGS ATLANTIC
sea
Gulf of Mexico
position
25.267, -83.738
vessel
M/V GGS ATLANTIC · 14 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

GULF OF MEXICO.
FLORIDA.
1. SEISMIC SURVEY IN PROGRESS UNTIL 31 MAY BY
   M/V GGS ATLANTIC TOWING 10050 METER LONG
   CABLE IN AREA BOUND BY
   25-08.57N 085-43.37W, 26-19.50N 082-44.06W,
   25-04.49N 082-05.11W, 24-48.41N 083-39.35W,
   24-07.28N 083-44.62W.
   SEVEN MILE BERTH REQUESTED.
2. CANCEL THIS MSG 01 JUN.

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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · cable & pipeline work

11 within 180 nm since 2007 · 0 in the last 12 months · 0 listed in force now

07
10
15
20

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.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

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 13:00Z; 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.