North Sea

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

in force
1
last 12 months
7
since 1997
4,732
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 aids2,50353%
Other66914%
Cable ops65814%
Surveys58312%
Wrecks1704%
Containers441%
Derelicts341%
Exercises321%
Debris291%
Mines90%
Missiles10%

Archive · 4,731 cancelled

  1. HYDROLANT 1742/00 · Surveys2000-05-15 → 2000-05-20
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 55-28N…
  2. HYDROLANT 1716/00 · Cable ops2000-05-13 → 2000-05-17
    Cable operations in progress until further notice by M/V monarch with submersible within one mile of…
  3. HYDROLANT 1715/00 · Surveys2000-05-13 → 2000-05-15
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 55-16N…
  4. HYDROLANT 1698/00 · Surveys2000-05-12 → 2000-05-17
    Underwater operations in progress until further notice by M/V goosander with support vessels and buoys…
  5. HYDROLANT 1697/00 · Cable ops2000-05-12 → 2000-05-13
    Cable operations in progress until further notice by M/V monarch within one mile of 51-34.1N 001-56.2E
  6. HYDROLANT 1696/00 · Surveys2000-05-12 → 2000-05-13
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 55-03N…
  7. HYDROLANT 1650/00 · Surveys2000-05-09 → 2000-05-12
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 54-45N…
  8. HYDROLANT 1640/00 · Nav aids2000-05-09 → 2000-05-12
    Cable buoys, fl y, temporarily established in 51-33.9N 001-56.1E and 51-35.2N 001-56.7E
  9. HYDROLANT 1639/00 · Surveys2000-05-09 → 2000-05-12
    Underwater operations in progress until further notice by M/V hiendal vicinity 51-22.3N 002-30.4E
  10. HYDROLANT 1626/00 · Surveys2000-05-08 → 2000-05-09
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 54-39N…
  11. HYDROLANT 1625/00 · Surveys2000-05-08 → 2000-05-08
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 54-39N…
  12. HYDROLANT 1616/00 · Cable ops2000-05-07 → 2000-05-09
    Underwater operations in progress until further notice by cableship monarch within one mile of 51-34.1N…
  13. HYDROLANT 1615/00 · Cable ops2000-05-07 → 2000-05-10
    Underwater operations in progress until further notice by cableship peter faber vicinity 51-29.6N 001-53.7E
  14. HYDROLANT 1594/00 · Surveys2000-05-05 → 2000-05-15
    Underwater operations in progress until further notice by M/V seaworker in area bound by 54-37.5N 001-01.8W,…
  15. HYDROLANT 1586/00 · Nav aids2000-05-05 → 2000-05-08
    Dgps station at sumburge head light 59-51N 001-16W unreliable 0830Z to 1600Z daily until 08 may
  16. HYDROLANT 1537/00 · Nav aids2000-04-30 → 2000-05-09
    Dyck buoy 51-03N 001-52E unlit
  17. HYDROLANT 1529/00 · Surveys2000-04-29 → 2000-05-09
    Underwater operations in progress until further notice by M/V goosander vicinity 51-22.3N 002-30.4E
  18. HYDROLANT 1520/00 · Surveys2000-04-29 → 2000-05-08
    Underwater operations in progress until further notice by M/V ace nature with submersible vicinity 52-20.7N…
  19. HYDROLANT 1510/00 · Cable ops2000-04-28 → 2000-04-28
    Underwater operations in progress until further notice by cableship monarch within one mile of 51-28N 002-39E
  20. HYDROLANT 1495/00 · Surveys2000-04-27 → 2000-04-29
    Underwater operations in progress until further notice by M/V ace nature with submersible vicinity 52-20.7N…

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