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 1126/17 · Wrecks2017-04-07 → 2017-04-13
    Dangerous wreck marked by lighted buoys in 51-40.21N 002-13.55E
  2. HYDROLANT 1106/17 · Nav aids2017-04-05 → 2017-04-06
    NAVTEX station cullercoats (g) 55-04.5N 001-27.8W off air 060700Z to 061700Z apr
  3. HYDROLANT 1082/17 · Nav aids2017-04-03 → 2017-04-04
    Sunk inner lightfloat 51-51.0N 001-34.9E unlit
  4. HYDROLANT 1075/17 · Nav aids2017-04-03 → 2017-05-01
    Cgoc aberdeen mf r/t service at greg ness 57-07.6N 002-03.2W off air
  5. HYDROLANT 1071/17 · Debris2017-04-02 → 2017-04-05
    Odas buoy adrift in 56-35.5N 001-44.9W at 020030Z apr
  6. HYDROLANT 1069/17 · Nav aids2017-04-02 → 2017-04-10
    Mf dsc services at cullercoats 55-04.5N 001-27.8W unreliable
  7. HYDROLANT 1064/17 · Containers2017-04-01 → 2017-04-04
    Seven containers adrift in vicinity 60-58.8N 001-50.2E
  8. HYDROLANT 1061/17 · Wrecks2017-04-01 → 2017-05-12
    Depths reported: a. 11.1 meters in 60-15.79N 001-02.73W
  9. HYDROLANT 1019/17 · Wrecks2017-03-29 → 2018-09-07
    Dangerous wreck, least depth 10 meters, in 52-06.1N 001-38.0E
  10. HYDROLANT 980/17 · Nav aids2017-03-27 → 2017-05-08
    All navigational aids at platform 44/23 a-cm, 54-12.2N 002-27.1E inoperative
  11. HYDROLANT 966/17 · Other2017-03-25 → 2017-04-20
    Unexploded ordnance in: a. 51-18.81N 002-16.62E
  12. HYDROLANT 939/17 · Surveys2017-03-23 → 2017-04-01
    Underwater operations in progress until further notice by M/V havila phoenix in vicinity of trackline…
  13. HYDROLANT 938/17 · Containers2017-03-23 → 2017-03-26
    Container adrift in 60-45.7N 001-07.3E at 231610Z mar
  14. HYDROLANT 915/17 · Surveys2017-03-21 → 2017-03-23
    Underwater operations in progress until further notice by M/V havila phoenix in vicinity of trackline…
  15. HYDROLANT 897/17 · Nav aids2017-03-20 → 2017-03-21
    Dgps station at girdle ness light 57-08.3N 002-02.8W off air
  16. HYDROLANT 867/17 · Nav aids2017-03-17 → 2017-03-22
    All navigational aids at platform 42/30-A 54-01.7N 000-57.9E inoperative
  17. HYDROLANT 840/17 · Nav aids2017-03-15 → 2017-04-26
    Fog signal at platform 9/13-SPM3, 59-32.0N 001-33.5E inoperative
  18. HYDROLANT 826/17 · Nav aids2017-03-14 → 2017-03-19
    All navigational aids at platform 48/6-C, 53-45.2N 001-04.9E inoperative
  19. HYDROLANT 825/17 · Wrecks2017-03-14 → 2017-04-25
    Depths reported: a. 1.4 meters in 52-05.7N 001-35.8E
  20. HYDROLANT 821/17 · Nav aids2017-03-14 → 2017-03-14
    Dgps station at sumburgh head light 59-51.3N 001-16.4W off air 140900Z to 141600Z mar

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