Irish Sea and St. George's Channel
IHO sea area 19 · -7° to -3° E, 52° to 55° N
- in force
- 0
- last 12 months
- 2
- archive messages
- 1,132
- categories
- 12
What the archive shows
1,132 messages are recorded since 1999-01-03 for the Irish Sea and St. George's 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 656 of 1,132 recorded messages (58%), 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
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 | 656 | 58% |
| Cable ops | 184 | 16% |
| Surveys | 162 | 14% |
| Other | 56 | 5% |
| Wrecks | 47 | 4% |
| Containers | 7 | 1% |
| Derelicts | 7 | 1% |
| Debris | 5 | 0% |
| Exercises | 4 | 0% |
| Restricted | 2 | 0% |
| Structures | 1 | 0% |
| Incidents | 1 | 0% |
Archive · 1,132 cancelled
- HYDROLANT 3037/21 · Cable ops2021-12-12 → 2021-12-21Cable operations in progress until further notice by cableship ile de batz in vicinity of trackline joining…
- HYDROLANT 2808/21 · Nav aids2021-11-14 → 2021-11-16GPS jamming exercises 0830Z to 1600Z daily 15 nov thru 10 dec in area within 20 miles of 54-50N 004-56W
- HYDROLANT 2273/21 · Nav aids2021-09-06 → 2021-10-04GPS jamming exercises 0730Z to 1500Z daily 06 sep thru 04 oct in area within 22 miles of 54-50.3N 004-55.8W
- HYDROLANT 2193/21 · Surveys2021-08-26 → 2021-09-20Survey operations in progress until further notice by S/V ocean resolution in area bound by 54-05.6N…
- HYDROLANT 2005/21 · Surveys2021-08-02 → 2021-08-24Survey operations in progress until further notice by M/V ocean resolution in area bound by 54-05.6N…
- HYDROLANT 2003/21 · Nav aids2021-08-01 → 2021-08-02Strumble head light 52-01-47N 005-04-25W unreliable
- HYDROLANT 1958/21 · Surveys2021-07-27 → 2021-07-29Survey operations in progress until further notice by M/V ocean resolution in area bound by 54-05.6N…
- HYDROLANT 1882/21 · Nav aids2021-07-19 → 2021-08-29GPS jamming exercise 0830Z to 1600Z daily 19 jul thru 31 aug in area within 28 miles of 54-50.3N 004-55.8W
- HYDROLANT 1404/21 · Nav aids2021-05-25 → 2021-05-28Hellyhunter buoy light 54-00.3N 006-02.0W off station and unreliable
- HYDROLANT 1399/21 · Nav aids2021-05-25 → 2021-05-27GPS jamming exercises 1300Z to 1500Z daily 25 thru 27 may in area within 32 miles of 52-08.5N 004-34.3W…
- HYDROLANT 1384/21 · Nav aids2021-05-24 → 2021-05-28GPS jamming exercises 0730Z to 1500Z daily 24 thru 28 may in area within 20 miles of 54-50.3N 004-55.8W
- HYDROLANT 1354/21 · Nav aids2021-05-19 → 2021-05-20GPS jamming exercises 1400Z to 1600Z daily 19 and 20 may in area within 30 miles of 52-08.5N 004-34.3W…
- HYDROLANT 1108/21 · Cable ops2021-04-22 → 2021-04-24Cable operations in progress until further notice by cableship ile daix in vicinity of trackline joining…
- HYDROLANT 1086/21 · Cable ops2021-04-19 → 2021-04-21Cable operations in progress until further notice by cableship ile daix in vicinity 53-45.0N 003-24.3W
- HYDROLANT 1082/21 · Cable ops2021-04-19 → 2021-04-19Cable operations in progress until further notice by cableship ile daix in vicinity 53-54.7N 004-58.3W
- HYDROLANT 1043/21 · Cable ops2021-04-16 → 2021-04-17Cable operations in progress until further notice by cableship ile daix in vicinity 53-53.8N 004-34.2W
- HYDROLANT 1024/21 · Nav aids2021-04-14 → 2021-05-26St
- HYDROLANT 1018/21 · Cable ops2021-04-14 → 2021-04-16Cable operations in progress until further notice by cableship ile daix in vicinity 53-54.7N 004-58.4W
- HYDROLANT 1001/21 · Cable ops2021-04-12 → 2021-04-14Cable operations in progress until further notice by cableship ile daix in vicinity 53-51.0N 004-59.4W
- HYDROLANT 989/21 · Nav aids2021-04-11 → 2021-05-18All navigational aids at platform 113/26 54-01.6N 003-51.7W inoperative
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.