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 1910/01 · Cable ops2001-07-05 → 2001-07-10
    Underwater operations in progress until further notice by cableship monarch vicinity of trackline between…
  2. HYDROLANT 1905/01 · Surveys2001-07-05 → 2001-07-08
    Underwater operations in progress until further notice by M/V havila reel vicinity 51-03.7N 001-45.9E
  3. HYDROLANT 1902/01 · Surveys2001-07-05 → 2001-07-06
    Underwater operations in progress until further notice by M/V eas vicinity 53-49N 002-23E
  4. HYDROLANT 1894/01 · Surveys2001-07-04 → 2001-07-05
    Underwater operations in progress until further notice by M/V eas vicinity 53-51N 002-22E
  5. HYDROLANT 1889/01 · Nav aids2001-07-04 → 2001-07-04
    Dgps station at north foreland light 51-23N 001-27E inoperative 040700Z to 041500Z jul
  6. HYDROLANT 1886/01 · Surveys2001-07-04 → 2001-07-10
    Underwater operations in progress until further notice by barge fetsy l with M/V ada d and M/V neptune 6…
  7. HYDROLANT 1882/01 · Cable ops2001-07-03 → 2001-07-04
    Underwater operations in progress until further notice by cableship monarch vicinity of trackline between…
  8. HYDROLANT 1881/01 · Cable ops2001-07-03 → 2001-07-03
    Underwater operations in progress until further notice by cableship monarch vicinity 51-17.4N 002-21.1E
  9. HYDROLANT 1880/01 · Surveys2001-07-03 → 2001-07-04
    Underwater operations in progress until further notice by M/V eas vicinity 52-29.5N 002-11.6E
  10. HYDROLANT 1878/01 · Nav aids2001-07-03 → 2001-07-04
    Dgps station at north foreland light 51-23N 001-27E inoperative 030800Z to 031600Z and 040700Z to 041200Z jul
  11. HYDROLANT 1876/01 · Surveys2001-07-02 → 2001-07-03
    Underwater operations in progress until further notice by M/V eas vicinity 52-29.4N 002-04.0E
  12. HYDROLANT 1870/01 · Surveys2001-07-01 → 2001-07-02
    Underwater operations in progress until further notice by M/V eas vicinity 52-29.4N 002-11.7E
  13. HYDROLANT 1864/01 · Nav aids2001-07-01 → 2001-07-01
    Sumburgh head light 59-51N 001-16W unreliable
  14. HYDROLANT 1862/01 · Other2001-06-30 → 2001-07-07
    Fishing nets with floats anchored in 54-19.6N 000-15.8E
  15. HYDROLANT 1861/01 · Surveys2001-06-30 → 2001-07-01
    Underwater operations in progress until further notice by M/V eas vicinity 52-25.9N 002-04.5E
  16. HYDROLANT 1853/01 · Surveys2001-06-29 → 2001-06-30
    Underwater operations in progress until further notice by M/V eas vicinity 52-25.7N 002-00.6E
  17. HYDROLANT 1847/01 · Surveys2001-06-28 → 2001-06-29
    Underwater operations in progress until further notice by M/V eas vicinity 52-25.7N 002-00.6E
  18. HYDROLANT 1841/01 · Surveys2001-06-27 → 2001-07-02
    Survey operations in progress until further notice by M/V la perouse within two miles of 51-05N 001-47E
  19. HYDROLANT 1840/01 · Surveys2001-06-27 → 2001-06-28
    Underwater operations in progress until further notice by M/V eas vicinity 52-25.5N 002-00.5E
  20. HYDROLANT 1837/01 · Cable ops2001-06-26 → 2001-07-04
    Underwater operations in progress until further notice by cableship peter faber vicinity 51-05.7N 001-56.5E

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