UK Hydrographic Office
Recorded as: UKHO
The coordinator of NAVAREA I. seahazards shows its warnings only where the U.S. NGA relayed them; the UK list itself is not collected, because its terms do not allow redistribution.
National warning services and NAVAREA coordinators collect reports of dangers in their waters — from hydrographic surveys, navies, ports and ships — and broadcast them as numbered navigational warnings, some ocean-wide and some coastal.
What the archive holds
54 messages in this archive record UKHO as their authority, issued from 2002-12-09 to 2024-01-23. None of them is in force in the latest lists we collected.
Wrecks accounts for 20 of 54 recorded messages (37%), the largest warning type group in this selection.
Attributed to NAVAREAs, they fall mostly in NAVAREA IV (47) and NAVAREA XII (1).
Located messages lie in 7 sea areas, most often Caribbean Sea, North Atlantic Ocean and Persian Gulf.
They reached this archive through NAVAREA IV (47), HYDROLANT (3), HYDROPAC (3) and NAVAREA XII (1).
Messages by year of issue
By month of issue, all years
Warning types
Where
NAVAREA IV 47 · NAVAREA XII 1
Most recently issued
- NAVAREA IV 72/24 · Derelicts · Caribbean Sea2024-01-22Derelict 12 meter S/V, white hull, adrift in vicinity 15-38.51N 080-35.59W at 222157Z jan
- NAVAREA IV 1409/22 · Debris · North Atlantic Ocean2022-12-30Debris adrift in vicinity 25-45.70N 077-12.69W
- HYDROLANT 1346/22 · Derelicts · Ionian Sea2022-05-23Derelict vessel serenity adrift in vicinity 36-57-55N 018-57-55E at 191245Z may
- HYDROLANT 1241/20 · Derelicts · Caribbean Sea2020-04-06Derelict F/V, blue hull, adrift in vicinity 10-22.6N 081-03.0W at 050001Z apr
- NAVAREA IV 227/18 · Debris · North Atlantic Ocean2018-03-1812 meter long object adrift in 22-40N 054-47W
- NAVAREA IV 214/18 · Wrecks · Caribbean Sea2018-03-13Wrecks reported: a. 11.1 meters in 19-21.63N 081-23.95W
- NAVAREA IV 203/18 · Wrecks · Caribbean Sea2018-03-09Dangerous wreck in 16-30.67N 088-21.94W
- NAVAREA IV 193/18 · Wrecks · Caribbean Sea2018-03-06Dangerous wreck in 19-41.50N 079-53.19W
Earliest in the archive
Other national warning services in NAVAREA IV
- WZ16,018
- AUSCOAST6,382
- NAVAREA V COASTAL S1,091
- NAVAREA V N597
- PANAMA MARITIME AUTHORITY120
- NAVAREA ONE107
- WEST INDIES - COASTAL103
- SHOM38
Counts are messages recording this issuer as their authority, recounted 2026-09-24; see coverage for what is collected. Not for navigation.