Mexican chart sm 831.4
Gulf of Mexico · NAVAREA IV 386/05
What this record establishes
Archived notice · 2005-11-26 17:11Z
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 204/05 182000Z NOV 05.. Issued 2005-11-21 19:04Z. 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 18.213, -94.432. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Mexican chart sm 922.1later cancellation notice
Current notices and reporting history in the Gulf of Mexico →
- issued
- 2005-11-21 19:04Z
- status
- Archived notice
- authority
- MEXICO IV 204/05 182000Z NOV 05.
- NAVAREA
- NAVAREA IV
- issued by
- MEXICO IV
- sea
- Gulf of Mexico
- position
- 18.213, -94.432
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
MEXICAN CHART SM 831.4. US CHART 28282 (2ND ED). COATZACOALCOS LANDFALL BUOY 18-12-46N 094-25-56W INOPERATIVE.
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- 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.
- Inoperative / unreliable / off air
- An aid or radio service is not working as charted or published.
Collected reports in this area · other warnings
8 within 180 nm since 2000 · 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.
- Hazardous operation 21 thru 26 may and 25 thru 30 june in area bound by 18-55.00N 092-08.00W, 18-55.00N…2024-05-16
- Anchor with cable lost in 18-13.8N 094-24.1W2016-12-06
- Geophysical operations in progress until 15 dec by M/V boa galatea in areas bound by: a. 18-37.38N…2015-10-27
- Geophysical operations in progress until 14 aug by M/V dong fang ming zhu in area bound by 23-16.77N…2015-08-10
- Geophysical operations in progress until 10 aug by M/V discoverer in area bound by 21-37.75N 094-58.50W,…2015-08-10
- Pipelaying operations in progress until 10 may 14 along trackline between 18-43.43N 092-40.92W and 18-43.28N…2013-05-10
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 · 17 nm
- Roca partida light 18-42-17N 095-11-18W unlitNav aids · 52.2 nm
- Santiaguillo light 19-08.56N 095-48.48W unlitNav aids · 96.1 nm
Worldwide in the collected sources
21 other warnings listed in force · see all
Record snapshot 2026-10-02 18:20Z; source collection times vary.
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.