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 588/99 · Cable ops1999-03-25 → 1999-03-26Cable operations in progress until further notice by M/V toisa mariner with submersible vicinity 51-32N…
- HYDROLANT 575/99 · Cable ops1999-03-24 → 1999-03-29Cable operations in progress until further notice by cableship leon thevenin in vicinity 51-15.5N 003-28.3W
- HYDROLANT 368/99 · Nav aids1999-02-21 → 1999-02-21Bull point light 51-12N 004-12W unlit 211000Z to 211400Z feb
- HYDROLANT 331/99 · Nav aids1999-02-14 → 1999-02-15Dgps service at nash point light 51-24N 003-33W unreliable 0900Z to 1800Z daily 14 and 15 feb
- HYDROLANT 973/97 · Nav aids1997-07-03 → 1999-03-05Lighted buoy, yellow, pillar, established in 51-32.5N 004-22.0W
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.