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 3326/16 · Surveys2016-12-09 → 2016-12-14
    Survey operations in progress until further notice by M/V stril explorer in area bound by 57-27.4N…
  2. HYDROLANT 3299/16 · Nav aids2016-12-07 → 2016-12-09
    North foreland light 51-22.5N 001-26.7E unreliable until 091100Z dec
  3. HYDROLANT 3297/16 · Surveys2016-12-07 → 2016-12-12
    Survey operations in progress until further notice by M/V geo ocean II in area bound by 53-00.0N 001-34.0E,…
  4. HYDROLANT 3289/16 · Nav aids2016-12-06 → 2016-12-09
    Hoo stack light 60-15.0N 001-05.4W unlit
  5. HYDROLANT 3285/16 · Nav aids2016-12-06 → 2016-12-06
    Dgps station at flamborough head light 54-07.0N 000-05.0W off air 060900Z to 061500Z dec
  6. HYDROLANT 3210/16 · Nav aids2016-11-30 → 2016-12-08
    Stirling dgps station 56-04N 004-04W off air 0800Z to 1630Z daily 30 nov thru 02 and 05 thru 08 dec
  7. HYDROLANT 3191/16 · Nav aids2016-11-29 → 2017-01-09
    Cgoc aberdeen mf dsc and r/t services at greg ness 57-07.6N 002-03.2W off air
  8. HYDROLANT 3180/16 · Nav aids2016-11-28 → 2016-11-29
    Stirling dgps station 56-04N 004-04W off air
  9. HYDROLANT 3157/16 · Nav aids2016-11-25 → 2016-11-30
    Fog signal at meteorological mast 56-26.4N 002-14.5W unreliable
  10. HYDROLANT 3147/16 · Nav aids2016-11-25 → 2016-12-06
    Cgoc shetland mf dsc services at st margarets hope 58-46.9N 002-56.7W off air
  11. HYDROLANT 3128/16 · Nav aids2016-11-23 → 2016-11-30
    Dyck-est buoy 51-05.7N 002-05.6E off station
  12. HYDROLANT 3101/16 · Nav aids2016-11-20 → 2016-11-21
    Fog signal at voyager spirit fpso 57-37.0N 001-38.4E inoperative
  13. HYDROLANT 3023/16 · Nav aids2016-11-14 → 2016-11-14
    North haisbro buoy 53-00.2N 001-32.3E RACON inoperative
  14. HYDROLANT 3015/16 · Nav aids2016-11-14 → 2016-12-26
    Fog signal at platform 12/21C jacky, 58-11.0N 002-58.8W inoperative
  15. HYDROLANT 2988/16 · Nav aids2016-11-11 → 2016-11-15
    All navigational aids at platform 49/22-ZD, 53-19.4N 002-14.2E inoperative
  16. HYDROLANT 2975/16 · Nav aids2016-11-10 → 2016-11-25
    Stirling dgps station 56-04N 004-04W off air
  17. HYDROLANT 2969/16 · Nav aids2016-11-09 → 2016-12-21
    Fog signal at platform 9/13-SPM3, 59-32.0N 001-33.5E inoperative
  18. HYDROLANT 2965/16 · Nav aids2016-11-08 → 2016-11-10
    All navigational aids at platform 49/22-ZD, 53-19.4N 002-14.2E inoperative
  19. HYDROLANT 2960/16 · Nav aids2016-11-08 → 2016-11-15
    All navigational aids at platform 49/30-A, 53-00.3N 002-53.8E inoperative
  20. HYDROLANT 2958/16 · Nav aids2016-11-08 → 2016-11-08
    Barrow 3 buoy 51-42.0N 001-20.3E unlit and RACON 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.