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 1836/01 · Nav aids2001-06-26 → 2001-06-29
    RACON at northeast goodwin buoy 51-20N 001-34E inoperative
  2. HYDROLANT 1833/01 · Surveys2001-06-26 → 2001-06-27
    Underwater operations in progress until further notice by M/V eas vicinity 53-57N 002-22E
  3. HYDROLANT 1827/01 · Surveys2001-06-25 → 2001-06-26
    Underwater operations in progress until further notice by M/V eas vicinity 54-11N 002-20E
  4. HYDROLANT 1798/01 · Wrecks2001-06-21 → 2003-07-24
    Dangerous wreck, least depth 11.7 meters, in 51-28.7N 001-23.9E
  5. HYDROLANT 1793/01 · Surveys2001-06-21 → 2001-06-21
    Underwater operations in progress until further notice by M/V eas vicinity of trackline between 52-27N…
  6. HYDROLANT 1787/01 · Wrecks2001-06-20 → 2001-06-21
    Dangerous wreck reported in 51-28.7N 001-23.9E
  7. HYDROLANT 1775/01 · Surveys2001-06-19 → 2001-06-21
    Underwater operations in progress until further notice by M/V eas vicinity of trackline joining 52-27N…
  8. HYDROLANT 1766/01 · Nav aids2001-06-19 → 2001-06-19
    Dgps station at flamborough head light 54-07N 000-05W inoperative 190800Z to 191600Z jun
  9. HYDROLANT 1761/01 · Nav aids2001-06-19 → 2001-06-20
    Sumburgh head light 59-51N 001-16W unreliable
  10. HYDROLANT 1715/01 · Surveys2001-06-13 → 2001-06-17
    Underwater operations in progress until further notice by M/V normand vester vicinity of trackline between…
  11. HYDROLANT 1707/01 · Surveys2001-06-12 → 2001-06-13
    Underwater operations in progress until further notice by M/V normand vester vicinity 51-06N 001-53E
  12. HYDROLANT 1698/01 · Cable ops2001-06-12 → 2001-06-15
    Underwater operations in progress until further notice by cableship maersk forwarder vicinity of trackline…
  13. HYDROLANT 1684/01 · Cable ops2001-06-10 → 2001-06-12
    Underwater operations in progress until further notice by cableship maersk forwarder vicinity of trackline…
  14. HYDROLANT 1675/01 · Cable ops2001-06-09 → 2001-06-22
    Underwater operations in progress until further notice by cableship monarch vicinity 51-42.9N 001-59.8E
  15. HYDROLANT 1667/01 · Cable ops2001-06-08 → 2001-06-10
    Underwater operations in progress until further notice by cableship maersk forwarder vicinity 51-44.3N…
  16. HYDROLANT 1655/01 · Cable ops2001-06-08 → 2001-06-08
    Underwater operations in progress until further notice by cableship maersk forwarder vicinity 51-06N 001-51E
  17. HYDROLANT 1654/01 · Cable ops2001-06-07 → 2001-06-09
    Underwater operations in progress until further notice by cableship monarch within one mile of 51-34.6N…
  18. HYDROLANT 1652/01 · Wrecks2001-06-07 → 2001-06-11
    Obstruction vicinity 60-15.3N 001-04.7W
  19. HYDROLANT 1626/01 · Cable ops2001-06-05 → 2001-06-08
    Underwater operations in progress until further notice by cableship maersk forwarder vicinity of trackline…
  20. HYDROLANT 1588/01 · Surveys2001-06-01 → 2001-06-07
    Underwater operations in progress until further notice by M/V normand vester vicinity 51-21N 002-24E

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