North Sea

IHO sea area 4 · -4° to 12° E, 51° to 61° N

in force
1
last 12 months
6
since 1997
4,731
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%
Other66914%
Cable ops65814%
Surveys58312%
Wrecks1704%
Containers441%
Derelicts341%
Exercises321%
Debris291%
Mines90%
Missiles10%

Archive · 4,730 cancelled

  1. HYDROLANT 281/06 · Other2006-02-10 → 2006-02-13
    Unexploded ordnance marked by sonar buoy vicinity 54-06.75N 001-03.33E
  2. HYDROLANT 272/06 · Surveys2006-02-09 → 2006-02-13
    Underwater operations in progress until further notice by M/V cso orelia along trackline between 54-18.5N…
  3. HYDROLANT 209/06 · Nav aids2006-01-30 → 2006-01-31
    Bell rock light 56-26.1N 002-23.1W unreliable
  4. HYDROLANT 208/06 · Nav aids2006-01-30 → 2006-01-31
    RACON at north shipwash buoy 52-01.7N 001-38.4E inoperative
  5. HYDROLANT 197/06 · Debris2006-01-29 → 2006-02-02
    Fishing gear adrift in 58-12.1N 001-26.4W
  6. HYDROLANT 178/06 · Nav aids2006-01-27 → 2006-03-08
    Mio ness light 60-29.7N 001-13.5W missing
  7. HYDROLANT 160/06 · Nav aids2006-01-24 → 2006-02-08
    Mrcc shetland 60-09N 001-08W mf dsc unreliable
  8. HYDROLANT 129/06 · Nav aids2006-01-20 → 2006-08-16
    Princes approach buoy relocated to 51-28.32N 001-23.75E
  9. HYDROLANT 121/06 · Nav aids2006-01-19 → 2006-02-23
    RACON at firth of inverness fairway buoy 57-40N 003-54W inoperative
  10. HYDROLANT 113/06 · Nav aids2006-01-17 → 2006-01-27
    Dunkerque light 51-03.0N 002-21.9E unreliable
  11. HYDROLANT 112/06 · Cable ops2006-01-17 → 2006-01-26
    Underwater operations in progress until further notice by cableship ile de brehat vicinity of trackline…
  12. HYDROLANT 109/06 · Nav aids2006-01-17 → 2006-08-16
    Ne cross sand buoy relocated to 52-44.22N 001-53.80E
  13. HYDROLANT 96/06 · Nav aids2006-01-15 → 2006-01-16
    Fife ness light 56-16.7N 002-35.1W unreliable
  14. HYDROLANT 89/06 · Nav aids2006-01-14 → 2006-01-15
    Out skerries light 60-25.5N 000-43.7W unreliable
  15. HYDROLANT 47/06 · Nav aids2006-01-08 → 2006-01-09
    Inter bank lightbuoy 51-15.6N 001-52.3E unlit
  16. HYDROLANT 21/06 · Nav aids2006-01-03 → 2006-01-05
    Rova head light 60-11.5N 001-08.5W unlit
  17. HYDROLANT 2409/05 · Cable ops2005-12-27 → 2005-12-27
    Underwater operations in progress until further notice by cableship peter faber with submersible vicinity…
  18. HYDROLANT 2401/05 · Cable ops2005-12-25 → 2005-12-27
    Underwater operations in progress until further notice by cableship peter faber with submersible vicinity…
  19. HYDROLANT 2391/05 · Surveys2005-12-23 → 2006-01-07
    Underwater operations 23 dec to 06 jan by M/V mermaid commander along trackline between 54-18.5N 002-25.2E…
  20. HYDROLANT 2389/05 · Cable ops2005-12-22 → 2005-12-23
    Underwater operations in progress until further notice by cableship peter faber vicinity 59-34N 000-36W

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