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 1878/17 · Other2017-06-16 → 2017-07-28
    Unexploded ordnance in vicinity 51-18.41N 001-27.4E
  2. HYDROLANT 1877/17 · Other2017-06-16 → 2017-06-26
    Unexploded ordnance in vicinity: a. 53-54.9N 001-51.2E
  3. HYDROLANT 1859/17 · Other2017-06-14 → 2017-06-16
    Unexploded ordnance in vicinity 51-18.41N 001-28.28E
  4. HYDROLANT 1845/17 · Surveys2017-06-13 → 2017-06-16
    Underwater operations in progress until further notice by M/V rambiz 300 in 53-05.0N 002-32.7E
  5. HYDROLANT 1837/17 · Containers2017-06-12 → 2017-06-15
    Container adrift in 60-41.5N 000-38.4W at 120500Z jun
  6. HYDROLANT 1834/17 · Surveys2017-06-11 → 2017-07-02
    Survey operations in progress until further notice by M/V wg amundsen in area bound by 59-00N 001-31E,…
  7. HYDROLANT 1793/17 · Nav aids2017-06-08 → 2017-07-20
    Cgoc humber mf dsc and r/t services at cullercoats 55-01N 001-25W unreliable
  8. HYDROLANT 1789/17 · Nav aids2017-06-07 → 2017-07-19
    Fog signal at platform 9/13-SPM3, 59-32.0N 001-33.5E inoperative
  9. HYDROLANT 1785/17 · Nav aids2017-06-07 → 2017-06-11
    All navigational aids at platform 42/30-C, 54-05.0N 000-49.5E unreliable
  10. HYDROLANT 1778/17 · Other2017-06-06 → 2017-06-16
    Unexploded ordnance in vicinity: a. 53-54.9N 001-51.2E
  11. HYDROLANT 1777/17 · Nav aids2017-06-06 → 2017-06-08
    Sunk centre lightfloat 51-50.1N 001-46.0E off station
  12. HYDROLANT 1764/17 · Nav aids2017-06-04 → 2017-06-09
    Scotland DNC 20
  13. HYDROLANT 1758/17 · Surveys2017-06-04 → 2017-06-05
    Underwater operations in progress until further notice by M/V rambiz 300 in 53-05.0N 002-32.7E
  14. HYDROLANT 1756/17 · Other2017-06-03 → 2017-06-06
    Unexploded ordnance in vicinity: a. 53-54.9N 001-51.2E
  15. HYDROLANT 1736/17 · Other2017-06-02 → 2017-06-02
    Unexploded ordnance in area within one mile of 51-18.76N 001-30.70E
  16. HYDROLANT 1706/17 · Wrecks2017-05-31 → 2019-01-04
    Depths reported: a. 5.3 meters in 60-13.19N 001-11.47W
  17. HYDROLANT 1705/17 · Other2017-05-31 → 2017-06-02
    Unexploded ordnance in area within .19 miles of 51-18.76N 001-30.70E
  18. HYDROLANT 1702/17 · Other2017-05-31 → 2017-05-31
    Unexploded ordnance in 51-18.76N 001-30.70E
  19. HYDROLANT 1698/17 · Surveys2017-05-31 → 2017-06-01
    Survey operations in progress until 010400Z jun by M/V geosurveyor XI in vicinity of trackline between…
  20. HYDROLANT 1697/17 · Surveys2017-05-31 → 2017-05-31
    Survey operations in progress until 311900Z may by M/V aquadynamic in vicinity of trackline between 51-20N…

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