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
97
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
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 3307/20 · Containers2020-10-29 → 2020-10-29Container adrift in 51-30N 004-00W at 291230Z oct
- HYDROLANT 3270/20 · Containers2020-10-26 → 2020-10-29Eight containers adrift at 261600Z oct in vicinity of trackline joining 51-06N 004-31W, 51-27N 003-48W
- HYDROLANT 1165/20 · Cable ops2020-03-31 → 2020-04-03Underwater operations in progress until further notice by cableship sovereign in vicinity 51-19.4N 003-47.9W
- HYDROLANT 1163/20 · Cable ops2020-03-31 → 2020-04-16Underwater operations in progress until further notice by cableship ile d'aix in vicinity 51-14.4N 003-25.0W
- HYDROLANT 609/20 · Cable ops2020-02-19 → 2020-02-27Underwater operations in progress until further notice by cableship ile d'aix in vicinity 51-14.8N 003-25.0W
- HYDROLANT 506/20 · Cable ops2020-02-12 → 2020-02-15Underwater operations in progress until further notice by cableship ile d'aix in vicinity 51-14.3N 003-24.0W
- HYDROLANT 3526/19 · Nav aids2019-11-17 → 2019-12-20Caldy island light 51-37.9N 004-41.1W unreliable
- HYDROLANT 3042/19 · Nav aids2019-10-07 → 2019-11-17Caldy island light 51-37.9N 004-41.1W range temporarily reduced to eight miles
- HYDROLANT 2753/19 · Nav aids2019-09-10 → 2019-09-12Lynmouth foreland light 51-14.7N 003-47.2W unreliable 0800Z to 1600Z daily 10 thru 12 sep
- HYDROLANT 1551/19 · Cable ops2019-05-23 → 2019-05-26Underwater operations in progress until further notice by cableship ile daix in vicinity of 51-14.8N 003-25.6W
- HYDROLANT 1532/19 · Nav aids2019-05-21 → 2019-05-23Dgps station at nash point light 51-24.1N 003-33.1W off air 0800Z to 1600Z daily until 23 may
- HYDROLANT 808/19 · Nav aids2019-03-14 → 2019-03-14Dgps station at nash point light 51-24.1N 003-33.1W off air
- HYDROLANT 1629/18 · Wrecks2018-05-24 → 2019-01-04Shoal water reported in area bound by 51-25.6N 003-39.5W, 51-25.0N 003-39.7W, 51-25.5N 003-43.5W, 51-26.1N…
- HYDROLANT 1594/18 · Nav aids2018-05-21 → 2018-05-25Dgps station at nash point light 51-24.0N 003-33.1W off air 0800Z to 1600Z daily 22 thru 25 may
- HYDROLANT 1585/18 · Cable ops2018-05-21 → 2018-05-24Cable operations in progress until further notice by cableship pierre de fermat in area within four miles of…
- HYDROLANT 817/18 · Nav aids2018-03-07 → 2018-03-08Dgps station at nash point light 51-24.1N 003-33.1W off air 080930Z to 081530Z mar
- HYDROLANT 759/18 · Nav aids2018-03-03 → 2018-03-05Dgps station at nash point light 51-24.1N 003-33.1W unreliable
- HYDROLANT 422/18 · Nav aids2018-02-06 → 2018-03-10Fog signal at mumbles light 51-34.0N 003-58.3W inoperative
- HYDROLANT 3863/17 · Nav aids2017-11-30 → 2017-11-30Dgps station at nash point light 51-24.1N 003-33.1W off air 301000Z to 301600Z nov
- HYDROLANT 3425/17 · Nav aids2017-10-23 → 2017-12-04Porthcawl light 51-28.4N 003-42.0W 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.