Bristol Channel
IHO sea area 20 · -5° to -2° E, 51° to 52° N
- in force
- 0
- last 12 months
- 1
- archive messages
- 265
- categories
- 9
What the archive shows
265 messages are recorded since 1997-07-03 for the Bristol Channel. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Nav aids accounts for 135 of 265 recorded messages (51%), the largest category group in this selection.
The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.
In force now · 0
Nothing in force in this sea right now.
By year
By month (all years)
By category · available archive
| Nav aids | 135 | 51% |
| Cable ops | 54 | 20% |
| Surveys | 50 | 19% |
| Wrecks | 11 | 4% |
| Ordnance | 6 | 2% |
| Other | 3 | 1% |
| Containers | 3 | 1% |
| Restricted | 2 | 1% |
| Incidents | 1 | 0% |
Archive · 265 cancelled
- HYDROLANT 229/09 · Nav aids2009-02-04 → 2009-02-04Nga chart 36042 (0 ed)
- HYDROLANT 189/09 · Nav aids2009-01-27 → 2009-01-28Nga chart 36042 (0 ed)
- HYDROLANT 148/09 · Nav aids2009-01-23 → 2009-01-23Nga chart 36044 (1ST ed)
- HYDROLANT 2249/08 · Nav aids2008-12-26 → 2008-12-29Hartland point 51-01N 004-31W dsc service unreliable
- HYDROLANT 2057/08 · Nav aids2008-11-27 → 2008-11-28Nga chart 36042 (0 ed)
- HYDROLANT 1832/08 · Nav aids2008-10-30 → 2008-10-30Nga chart 36044 (1ST ed)
- HYDROLANT 1378/08 · Cable ops2008-08-27 → 2008-08-30Underwater operations in progress until further notice by cableship leon thevenin vicinity 51-15.6N 003-27.6W
- HYDROLANT 1145/08 · Nav aids2008-07-10 → 2008-07-10Nga chart 36044 (1ST ed)
- HYDROLANT 861/08 · Nav aids2008-05-20 → 2008-05-22Nga chart 36044 (1ST ed)
- HYDROLANT 467/08 · Nav aids2008-03-17 → 2008-03-17Nga chart 36044(1ST ed)
- HYDROLANT 463/08 · Nav aids2008-03-16 → 2008-03-17Nga chart 36039 (0 ed)
- HYDROLANT 458/08 · Nav aids2008-03-16 → 2008-03-16Nga chart 36044 (1ST ed)
- HYDROLANT 374/08 · Nav aids2008-02-28 → 2008-03-10Nga chart 36042 (0 ed)
- HYDROLANT 138/08 · Nav aids2008-01-18 → 2008-01-22Nga chart 36045 (3RD ed)
- HYDROLANT 2036/07 · Nav aids2007-12-08 → 2007-12-10Nga chart 36044 (1ST ed)
- HYDROLANT 1988/07 · Nav aids2007-11-30 → 2007-12-01Nga chart 35024 (2ND ed)
- HYDROLANT 1181/07 · Cable ops2007-07-06 → 2007-07-10Underwater operations in progress until further notice by cableship leon thevenin in vicinity 51-30.2N…
- HYDROLANT 865/07 · Nav aids2007-05-22 → 2007-05-24Dgps station at nash point light 51-24.1N 003-33.1W off air 0800Z to 1600Z daily 22 thru 24 may
- HYDROLANT 294/07 · Nav aids2007-02-23 → 2007-03-28Fog signal at foreland ledge 51-15.3N 003-47.5W inoperative
- HYDROLANT 127/07 · Nav aids2007-01-21 → 2007-01-22Breaksea buoy 51-20N 003-19W unlit
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.