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 1151/06 · Cable ops2006-06-18 → 2006-06-30
    Seismic survey in progress until further notice by M/V fugro meridian towing 2600 meter long cable in area…
  2. HYDROLANT 1138/06 · Cable ops2006-06-14 → 2006-06-18
    Seismic survey in progress until further notice by M/V fugro meridian towing 2600 meter long cable in area…
  3. HYDROLANT 1131/06 · Cable ops2006-06-13 → 2006-06-21
    Underwater operations in progress until further notice by cableship wave sentinel and dsv noordhoek vicinity…
  4. HYDROLANT 1113/06 · Exercises2006-06-09 → 2006-06-09
    Hazardous operations 091515Z to 091800Z jun in area bound by 56-04N 001-55E, 56-06N 000-29W, 56-18N 001-25W,…
  5. HYDROLANT 1089/06 · Nav aids2006-06-07 → 2006-06-07
    Dgps station at sumburgh head light 59-51.3N 001-16.4W off air 070900Z to 071600Z jun
  6. HYDROLANT 1075/06 · Other2006-06-05 → 2006-10-11
    Platform established in 53-39.05N 002-03.45E
  7. HYDROLANT 1070/06 · Surveys2006-06-04 → 2006-06-22
    Underwater operations in progress until further notice by M/V maersk assister within one mile of 52-54.5N…
  8. HYDROLANT 1050/06 · Nav aids2006-05-31 → 2006-06-01
    Flamborough head light and dgps station 54-07.0N 000-04.8W off air
  9. HYDROLANT 1023/06 · Exercises2006-05-26 → 2006-05-26
    Hazardous operations 261100Z to 261500Z may in area bound by 56-04N 001-55E, 56-05N 000-29W, 56-18N 001-25W,…
  10. HYDROLANT 1000/06 · Exercises2006-05-24 → 2006-05-24
    Hazardous operations 241130Z to 241530Z may in area bound by 56-04N 001-55E, 56-05N 000-29W, 56-18N 001-25W,…
  11. HYDROLANT 955/06 · Exercises2006-05-18 → 2006-05-18
    Hazardous operations 181030Z to 181430Z may in area bound by 56-04N 001-55E, 56-05N 000-29W, 56-18N 001-25W,…
  12. HYDROLANT 939/06 · Surveys2006-05-16 → 2006-06-04
    Underwater operations in progress until further notice by M/V noordhoek singapore: a. within three miles of…
  13. HYDROLANT 931/06 · Surveys2006-05-15 → 2006-05-19
    Survey operations in progress until 191200Z may by M/V quorn along trackline joining 51-49.7N 001-43.3E,…
  14. HYDROLANT 927/06 · Nav aids2006-05-15 → 2006-06-19
    North new sand buoy 53-38.5N 000-21.9E missing
  15. HYDROLANT 889/06 · Exercises2006-05-10 → 2006-05-11
    Hazardous operations 101245Z to 101445Z may and 111200Z to 111400Z may in area bound by 56-04N 001-55E,…
  16. HYDROLANT 880/06 · Nav aids2006-05-08 → 2006-08-16
    Fog signal at noord hinder south light 51-51.4N 002-28.7E discontinued
  17. HYDROLANT 879/06 · Surveys2006-05-08 → 2008-02-09
    Underwater operations in progress until further notice by barge tog mor vicinity 52-39N 002-27E
  18. HYDROLANT 868/06 · Other2006-05-05 → 2006-10-11
    Light, fl wrg 5 sec 48 meters 10-7 miles with sectors green 292-357, white 357-002, red 002-157, white…
  19. HYDROLANT 841/06 · Other2006-05-02 → 2006-05-15
    Pipelaying operations in progress until further notice by barge tog mor vicinity 52-52.5N 001-30.0E
  20. HYDROLANT 839/06 · Cable ops2006-05-01 → 2006-05-11
    Underwater operations in progress until further notice by cableship rene descartes vicinity 59-25.1N 000-14.2E

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