Survey operations in progress until 16 may by M/V psv allison in: a. 18-30.70N 093-58.24W
Gulf of Mexico · NAVAREA IV 406/21
What this record establishes
Archived notice · 2021-05-17 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 45/21 142009Z MAY 21.. Issued 2021-05-14 20:17Z. 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 parsed report position is 18.593, -93.918. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the Gulf of Mexico →
- issued
- 2021-05-14 20:17Z
- status
- Archived notice
- authority
- MEXICO IV 45/21 142009Z MAY 21.
- NAVAREA
- NAVAREA IV
- issued by
- MEXICO IV
- sea
- Gulf of Mexico
- position
- 18.593, -93.918
- vessel
- M/V ALLISON · 2 messages
- 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. SURVEY OPERATIONS IN PROGRESS UNTIL 16 MAY BY M/V PSV ALLISON IN: A. 18-30.70N 093-58.24W. B. 18-40.45N 093-51.91W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 17 MAY 21.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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
34 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.
- Underwater operations in progress until 01 sep in area bound by 18-52-59N 093-49-46W, 18-52-38N 093-49-18W,…2021-08-13
- 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 · 25.9 nm
- Roca partida light 18-42-17N 095-11-18W unlitNav aids · 72.6 nm
- Santiaguillo light 19-08.56N 095-48.48W unlitNav aids · 112.3 nm
Worldwide in the collected sources
55 survey operations listed in force · see all
Record snapshot 2026-10-01 00:06Z; 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.