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 1665/17 · Other2017-05-27 → 2017-07-08
    Unexploded ordnance in 51-19.31N 001-56.12E
  2. HYDROLANT 1658/17 · Other2017-05-26 → 2017-06-03
    Unexploded ordnance in vicinity: 1. 53-54.9N 001-51.2E
  3. HYDROLANT 1656/17 · Surveys2017-05-26 → 2017-05-30
    Survey operations in progress by M/V geosurveyor XI along trackline joining 51-19.6N 001-45.6E and 51-19.4N…
  4. HYDROLANT 1653/17 · Wrecks2017-05-26 → 2017-07-07
    Dangerous wreck marked by lighted buoys in 51-40.20N 002-13.58E
  5. HYDROLANT 1652/17 · Nav aids2017-05-26 → 2017-07-07
    Fog signal at wind turbines inoperative in: a. 53-10.4N 001-04.8E
  6. HYDROLANT 1605/17 · Nav aids2017-05-23 → 2017-05-26
    Dgps station at north foreland light 51-22.5N 001-26.7E off air 0800Z to 1600Z daily 23 thru 25 may
  7. HYDROLANT 1601/17 · Nav aids2017-05-22 → 2017-05-25
    All navigational aids at platform 42/30-C, 54-05.0N 000-49.5E inoperative
  8. HYDROLANT 1595/17 · Other2017-05-21 → 2017-12-19
    Light ranges temporarily reduced to 12 miles: a. tarbat ness 57-51.9N 003-46.6W
  9. HYDROLANT 1578/17 · Wrecks2017-05-19 → 2017-06-30
    14.5 meter depth reported in 60-38.43N 001-11.27W
  10. HYDROLANT 1568/17 · Nav aids2017-05-18 → 2017-05-22
    Fog signal at platform 49/16-PQD, 53-22.7N 002-06.7E inoperative
  11. HYDROLANT 1548/17 · Nav aids2017-05-17 → 2017-05-18
    Stirling dgps station 56-04N 004-04W off air 0800Z to 1500Z daily 17 and 18 may
  12. HYDROLANT 1493/17 · Cable ops2017-05-12 → 2017-05-16
    Underwater operations in progress until further notice by cableship pierre de fermat with submersible in…
  13. HYDROLANT 1492/17 · Wrecks2017-05-12 → 2019-01-04
    Depths reported: a. 11.1 meters in 60-15.79N 001-02.73W
  14. HYDROLANT 1480/17 · Surveys2017-05-10 → 2017-06-05
    Underwater operations in progress until further notice by barge taklift 4 in 53-05.0N 002-32.7E
  15. HYDROLANT 1457/17 · Nav aids2017-05-08 → 2017-05-10
    All navigational aids at platform 44/23 a-cm, 54-12.2N 002-27.1E inoperative
  16. HYDROLANT 1455/17 · Nav aids2017-05-08 → 2017-05-10
    Platform 48/10-ND 53-43.5N 001-53.9E unlit
  17. HYDROLANT 1450/17 · Cable ops2017-05-07 → 2017-05-12
    Underwater operations in progress until further notice by cableship pierre de fermat with submersible in…
  18. HYDROLANT 1439/17 · Surveys2017-05-06 → 2017-05-07
    Underwater operations in progress until further notice by barge taklift 4 in 53-05.0N 002-32.7E
  19. HYDROLANT 1393/17 · Cable ops2017-05-02 → 2017-05-07
    Underwater operations in progress until further notice by cableship pierre de fermat with submersible in…
  20. HYDROLANT 1390/17 · Nav aids2017-05-02 → 2017-05-02
    Cgoc aberdeen mf dsc service at greg ness 57-07.6N 002-03.2W 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.