North Sea

IHO sea area 4 · -4° to 12° E, 51° to 61° N

in force
1
last 12 months
6
since 1997
4,730
categories
11

In force now · 1

  1. HYDROLANT 1496/26 · Surveys2026-08-03
    Survey operations are underway in the North Sea near Norway by the vessel Ramform Hyperion towing ten 2740-meter cables, requesting a three-mile berth.

Longest in force

  1. HYDROLANT 1496/26 · Surveys2026-08-03
    Survey operations are underway in the North Sea near Norway by the vessel Ramform Hyperion towing ten 2740-meter cables, requesting a three-mile berth.

By year

97
98
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 · since 1997

Nav aids2,50253%
Other66814%
Cable ops65814%
Surveys58312%
Wrecks1704%
Containers441%
Derelicts341%
Exercises321%
Debris291%
Mines90%
Missiles10%

Archive · 4,729 cancelled

  1. HYDROLANT 147/17 · Nav aids2017-01-15 → 2017-01-16
    All navigational aids at platform breagh, 54-35.7N 000-26.0E inoperative
  2. HYDROLANT 139/17 · Wrecks2017-01-14 → 2017-01-15
    Dangerous wreck in 51-40.20N 002-13.58E
  3. HYDROLANT 136/17 · Wrecks2017-01-14 → 2017-01-14
    Dangerous wreck in 51-40.9N 002-15.4E
  4. HYDROLANT 128/17 · Nav aids2017-01-13 → 2017-01-15
    All navigational aids at platform breagh, 54-35.7N 000-26.0E unreliable
  5. HYDROLANT 124/17 · Nav aids2017-01-12 → 2017-02-26
    Tarbat ness light 57-51.9N 003-46.6W range temporarily reduced to 12 miles
  6. HYDROLANT 122/17 · Nav aids2017-01-12 → 2017-01-17
    All navigational aids at cavendish platform, 54-28.7N 001-44.4E inoperative
  7. HYDROLANT 84/17 · Nav aids2017-01-09 → 2017-01-10
    Stirling dgps station 56-04N 004-04W off air
  8. HYDROLANT 81/17 · Nav aids2017-01-09 → 2017-02-20
    Cgoc aberdeen mf dsc and r/t services at greg ness 57-07.6N 002-03.2W off air
  9. HYDROLANT 72/17 · Nav aids2017-01-07 → 2017-01-19
    All navigational aids at platform 49/26-D, 53-00.5N 002-11.1E inoperative
  10. HYDROLANT 69/17 · Other2017-01-07 → 2017-01-17
    Unexploded ordnance, marked by buoy, in 57-42.3N 003-35.5W
  11. HYDROLANT 19/17 · Other2017-01-01 → 2017-01-20
    All navigational aids at meteorological mast 53-10.6N 002-59.1E inoperative
  12. HYDROLANT 3493/16 · Nav aids2016-12-26 → 2017-02-06
    Fog signal at platform 12/21C jacky, 58-11.0N 002-58.8W inoperative
  13. HYDROLANT 3452/16 · Nav aids2016-12-21 → 2017-02-01
    Fog signal at platform 9/13-SPM3, 59-32.0N 001-33.5E inoperative
  14. HYDROLANT 3443/16 · Nav aids2016-12-20 → 2016-12-22
    Hoo stack light 60-15.0N 001-05.4W unlit
  15. HYDROLANT 3429/16 · Nav aids2016-12-19 → 2017-01-30
    Platform 44/23 a-cm, 54-12.2N 002-27.1E unlit and fog signal inoperative
  16. HYDROLANT 3419/16 · Nav aids2016-12-17 → 2017-01-07
    Cgoc aberdeen dsc service at windy head 57-38.9N 002-14.6W off air
  17. HYDROLANT 3410/16 · Nav aids2016-12-17 → 2017-01-24
    All navigational aids at vampire platform, 53-28.0N 002-02.6E inoperative
  18. HYDROLANT 3399/16 · Nav aids2016-12-16 → 2016-12-17
    Hoo stack light 60-15.0N 001-05.4W unlit
  19. HYDROLANT 3398/16 · Nav aids2016-12-16 → 2017-01-16
    Platform 48/20, 53-26.9N 001-53.0E unlit
  20. HYDROLANT 3360/16 · Nav aids2016-12-13 → 2016-12-14
    Cgoc aberdeen mf dsc at windy head 57-38.9N 002-14.6W off air

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.