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 2259/14 · Nav aids2014-09-17 → 2014-09-19
    Shetland Islands
  2. HYDROLANT 2252/14 · Other2014-09-17 → 2014-10-29
    Ordnance
  3. HYDROLANT 2247/14 · Nav aids2014-09-17 → 2014-10-28
    Mrcc aberdeen mf r/t and mf dsc service at greg ness 57-08N 002-03W off air
  4. HYDROLANT 2215/14 · Other2014-09-12 → 2015-04-02
    Moray Firth
  5. HYDROLANT 2184/14 · Nav aids2014-09-09 → 2014-09-12
    Southern North Sea
  6. HYDROLANT 2169/14 · Cable ops2014-09-06 → 2014-09-11
    Underwater operations in progress until further notice by cableship raymond croze with submersible within…
  7. HYDROLANT 2148/14 · Nav aids2014-09-04 → 2014-10-16
    Cancel HYDROLANT 1795/14
  8. HYDROLANT 2140/14 · Nav aids2014-09-04 → 2014-09-23
    B. 49/17-DD, 53-26.4N 002-23.6E
  9. HYDROLANT 2135/14 · Cable ops2014-09-03 → 2014-09-08
    Underwater operations in progress until further notice by cableship ile de batz vicinity of trackline…
  10. HYDROLANT 2123/14 · Nav aids2014-09-02 → 2014-10-14
    Cancel HYDROLANT 1777/14
  11. HYDROLANT 2088/14 · Nav aids2014-08-30 → 2014-09-29
    Southern North Sea
  12. HYDROLANT 2085/14 · Cable ops2014-08-30 → 2014-09-03
    Underwater operations in progress until further notice by cableship ile de batz vicinity of trackline…
  13. HYDROLANT 2047/14 · Wrecks2014-08-26 → 2014-11-18
    England-east Coast
  14. HYDROLANT 2033/14 · Nav aids2014-08-25 → 2014-08-25
    Dover Strait
  15. HYDROLANT 1996/14 · Cable ops2014-08-20 → 2014-09-10
    Seismic survey in progress until further notice by M/V polarcus asima towing eight 7400 meter long cables in…
  16. HYDROLANT 1991/14 · Derelicts2014-08-20 → 2014-08-23
    Derelict S/V adrift in 53-16N 002-13E at 200710Z aug
  17. HYDROLANT 1975/14 · Derelicts2014-08-18 → 2014-08-20
    Derelict S/V adrift in 53-25.6N 001-42.3E at 181623Z aug
  18. HYDROLANT 1971/14 · Derelicts2014-08-18 → 2014-08-18
    Derelict S/V adrift in 53-25.6N 001-27.2E at 181000Z aug
  19. HYDROLANT 1947/14 · Wrecks2014-08-15 → 2015-04-02
    England-east Coast
  20. HYDROLANT 1923/14 · Nav aids2014-08-12 → 2014-08-16
    Cancel HYDROLANT 1919/14

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