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 2246/01 · Cable ops2001-08-14 → 2001-08-16Underwater operations in progress until further notice by cableship meda vicinity of trackline between…
- HYDROLANT 2231/01 · Cable ops2001-08-13 → 2001-08-14Underwater operations in progress until further notice by cableship meda vicinity of trackline between…
- HYDROLANT 2201/01 · Cable ops2001-08-09 → 2001-08-13Underwater operations in progress until further notice by cableship meda within two miles of 51-17N 003-01W
- HYDROLANT 1859/01 · Surveys2001-06-30 → 2001-07-01Underwater operations in progress until further notice by M/V havila reel vicinity of trackline between…
- HYDROLANT 1846/01 · Surveys2001-06-28 → 2001-06-30Underwater operations in progress until further notice by M/V havila reel vicinity trackline between 51-15N…
- HYDROLANT 1832/01 · Surveys2001-06-26 → 2001-06-28Underwater operations in progress until further notice by M/V havila reel within one mile of 51-06.5N…
- HYDROLANT 1765/01 · Surveys2001-06-19 → 2001-06-21Underwater operations in progress until further notice by M/V havila reel vicinity of trackline between…
- HYDROLANT 1755/01 · Nav aids2001-06-18 → 2001-06-22Bull point light 51-12N 004-12W unlit 0800Z to 1700Z daily 18 thru 22 jun
- HYDROLANT 1736/01 · Surveys2001-06-15 → 2001-06-17Underwater operations in progress until further notice by M/V havila reel within one mile of 51-22.5N…
- HYDROLANT 1724/01 · Surveys2001-06-14 → 2001-06-15Underwater operations in progress until further notice by M/V havila reel within one mile of 51-22.5N…
- HYDROLANT 1699/01 · Nav aids2001-06-12 → 2001-06-15Bull point light 51-12N 004-12W unlit 0800Z to 1700Z daily 12 thru 15 jun
- HYDROLANT 1499/01 · Nav aids2001-05-24 → 2001-05-24Dgps station at nash point light 51-24N 003-31W unreliable 240900Z to 241200Z may
- HYDROLANT 1273/01 · Surveys2001-04-28 → 2001-05-03Underwater operations in progress until further notice by M/V havila reel vicinity 51-22N 004-22W
- HYDROLANT 1077/01 · Cable ops2001-04-05 → 2001-04-06Underwater operations in progress until further notice by cableship oceanic king vicinity of trackline…
- HYDROLANT 1057/01 · Cable ops2001-04-03 → 2001-04-05Underwater operations in progress until further notice by cableship oceanic king vicinity of trackline…
- HYDROLANT 1015/01 · Nav aids2001-03-30 → 2001-06-23Breaksea lightfloat 51-20N 003-19W temporarily replaced by safewater buoy, lfl 10 sec, fog signal and RACON…
- HYDROLANT 883/01 · Cable ops2001-03-17 → 2001-03-22Underwater operations in progress until further notice by cableship sovereign vicinity of trackline between…
- HYDROLANT 775/01 · Cable ops2001-03-07 → 2001-03-08Underwater operations in progress until further notice by cableship sovereign vicinity of trackline between…
- HYDROLANT 732/01 · Surveys2001-03-04 → 2001-03-07Underwater operations in progress until further notice by M/V maersk forwarder vicinity 51-24N 002-26W
- HYDROLANT 717/01 · Cable ops2001-03-02 → 2001-03-07Underwater operations in progress until further notice by cableship sovereign vicinity 51-15N 003-23W
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.