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 1457/06 · Exercises2006-08-07 → 2006-08-10
    Hazardous operations 0900Z to 1000Z daily 08 thru 10 aug along trackline between 54-00N 000-06E and 54-10N…
  2. HYDROLANT 1456/06 · Other2006-08-07 → 2007-12-02
    Navigation prohibited within 500 meters of: a. 58-11.73N 000-58.31E
  3. HYDROLANT 1433/06 · Cable ops2006-08-02 → 2006-09-06
    Seismic survey in progress until further notice by M/V ocean explorer towing six 4050 meter long cables in…
  4. HYDROLANT 1431/06 · Other2006-08-02 → 2006-11-08
    Pipelaying operations in progress until further notice by barge castoro sei in vicinity of trackline joining…
  5. HYDROLANT 1407/06 · Nav aids2006-07-30 → 2006-08-01
    RACON at buchan ness light 57-28.2N 001-46.5W inoperative
  6. HYDROLANT 1396/06 · Nav aids2006-07-27 → 2006-07-27
    Mrcc aberdeen station banff 57-38N 002-31W dsc and rt unusable
  7. HYDROLANT 1389/06 · Nav aids2006-07-26 → 2006-07-26
    Dsc station saxavord 60-50N 000-50W unusable until further notice
  8. HYDROLANT 1348/06 · Surveys2006-07-18 → 2006-08-10
    Underwater operations in progress until further notice by M/V fugro explorer vicinity 53-28.2N 002-55.5E
  9. HYDROLANT 1326/06 · Surveys2006-07-15 → 2006-08-01
    Underwater operations in progress until further notice by M/V castoro sei along trackline joining 52-52N…
  10. HYDROLANT 1305/06 · Nav aids2006-07-13 → 2006-07-13
    North foreland dgps station 51-22.5N 001-26.8E off air 130730Z to 131530Z jul
  11. HYDROLANT 1293/06 · Nav aids2006-07-12 → 2006-07-12
    North foreland dgps station 51-22.5N 001-26.8E off air 120730Z to 121530Z jul
  12. HYDROLANT 1289/06 · Nav aids2006-07-11 → 2006-07-11
    North foreland dgps station 51-22.5N 001-26.8E off air 110730Z to 111530Z jul
  13. HYDROLANT 1285/06 · Nav aids2006-07-09 → 2006-07-10
    Tod head point light 56-53.0N 002-12.8W unreliable
  14. HYDROLANT 1271/06 · Cable ops2006-07-06 → 2006-07-28
    Seismic survey in progress until further notice by M/V fugro meridian towing one 2000 meter long cable…
  15. HYDROLANT 1269/06 · Exercises2006-07-06 → 2006-07-07
    Hazardous operations at 062000Z jul vicinity 54-09.30N 000-42.15E
  16. HYDROLANT 1228/06 · Nav aids2006-06-28 → 2006-06-30
    Fog signal at platform 53-34N 000-53E inoperative
  17. HYDROLANT 1198/06 · Nav aids2006-06-24 → 2006-06-25
    RACON at foxtrot 3 lightship 51-23.8N 002-00.6E inoperative
  18. HYDROLANT 1182/06 · Other2006-06-22 → 2006-09-20
    Platform established in 54-28.7N 001-44.4E
  19. HYDROLANT 1178/06 · Surveys2006-06-22 → 2006-08-02
    Submarine research operations in progress until further notice by M/V bibby aquamarine with submersible…
  20. HYDROLANT 1160/06 · Other2006-06-19 → 2006-10-11
    Platform established in 54-16.39N 000-59.78E

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