Underwater operations 221200Z to 221800Z apr in 10-22.6N 075-32.3W
Caribbean Sea · NAVAREA IV 322/21
What this record establishes
Archived notice · 2021-04-22 19:00Z
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) · COLOMBIA 115/21 210933Z APR 21.. Issued 2021-04-21 09:33Z. 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
- Caribbean Sea. The parsed report position is 10.377, -75.538. 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 Caribbean Sea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-04-22 12:00Z | 2021-04-22 18:00Z | — | 6 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2021-04-21 09:33Z
- status
- Archived notice
- self-cancels
- 2021-04-22 19:00Z
- authority
- COLOMBIA 115/21 210933Z APR 21.
- NAVAREA
- NAVAREA IV
- issued by
- COLOMBIA
- sea
- Caribbean Sea
- position
- 10.377, -75.538
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
CARIBBEAN SEA. COLOMBIA. 1. UNDERWATER OPERATIONS 221200Z TO 221800Z APR IN 10-22.6N 075-32.3W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 221900Z APR 21.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- 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
28 within 180 nm since 2006 · 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 further notice by M/V noble discoverer in 11-32.66N 073-34.52W2024-04-19
- Survey operations in progress until 21 may in area bound by 09-43.00N 076-00.00W, 09-43.00N 075-34.00W,…2024-04-13
- Survey operations in progress until 25 feb 24 by M/V gyre in area bound by 12-13.70N 073-58.63W, 11-59.00N…2023-09-02
- Underwater operations in progress until further notice by dredge leila in areas bound by: a. 07-56.05N…2023-07-01
- Underwater operations in progress until further notice by c/s it intrepid in 11-16.70N 074-59.20W2023-02-01
- Survey operations in progress until further notice by M/V maria s. merian in 11-07.84N 074-51.64W2022-10-30
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
- RACON at rio magdalena F-2 light 11-06.40N 074-51.30W inoperativeNav aids · 59.5 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 11:48Z; 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.