Underwater operations in progress until 01 sep in area bound by 18-52-59N 093-49-46W, 18-52-38N 093-49-18W,…
Gulf of Mexico · NAVAREA IV 699/21
What this record establishes
Archived notice · 2021-09-02 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 58/21 132119Z AUG 21.. Issued 2021-08-13 21:45Z. 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.
Current notices and reporting history in the Gulf of Mexico →
- issued
- 2021-08-13 21:45Z
- status
- Archived notice
- authority
- MEXICO IV 58/21 132119Z AUG 21.
- NAVAREA
- NAVAREA IV
- issued by
- MEXICO IV
- sea
- Gulf of Mexico
- position
- 18.872, -93.832
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BAY OF CAMPECHE. MEXICO. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 01 SEP IN AREA BOUND BY 18-52-59N 093-49-46W, 18-52-38N 093-49-18W, 18-52-07N 093-49-16W, 18-51-44N 093-49-36W, 18-51-42N 093-50-09W, 18-52-01N 093-50-33W, 18-52-33N 093-50-35W, 18-52-55N 093-50-15W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 02 SEP 21.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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.
Collected reports in this area · survey operations
35 within 180 nm since 2004 · 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.
- Survey operations in progress until 16 may by M/V psv allison in: a. 18-30.70N 093-58.24W2021-05-14
- Survey operations in progress until 300800Z jul by M/V geo explorer in area bound by 18-34.37N 092-46.23W,…2019-06-30
- Survey operations in progress until further notice by M/V polarcus naila towing 12 8400 meter long cables in…2019-06-11
- Survey operations in progress until 16 mar by M/V wg tasman, M/V wg cook, M/V geco topaz and M/V geco…2018-03-10
- Survey operations in progress until 16 mar by M/V wg tasman, M/V wg cook, M/V geco topaz and M/V geco…2018-03-07
- Survey operations in progress until 06 mar by M/V wg tasman, M/V wg cook, M/V geco topaz and M/V geco…2018-03-02
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
- Tonala light 18-12-45N 094-08-00W unlitNav aids · 43.2 nm
- Roca partida light 18-42-17N 095-11-18W unlitNav aids · 77.7 nm
- Santiaguillo light 19-08.56N 095-48.48W unlitNav aids · 113.3 nm
Worldwide in the collected sources
55 survey operations listed in force · see all
Record snapshot 2026-10-01 00:05Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.