North Sea

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

in force
1
last 12 months
6
since 1997
4,730
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%
Other66814%
Cable ops65814%
Surveys58312%
Wrecks1704%
Containers441%
Derelicts341%
Exercises321%
Debris291%
Mines90%
Missiles10%

Archive · 4,729 cancelled

  1. HYDROLANT 2381/15 · Cable ops2015-09-24 → 2015-09-26
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  2. HYDROLANT 2379/15 · Cable ops2015-09-23 → 2015-10-12
    Seismic survey in progress until further notice by M/V wg tasman towing 8700 meter long cable vicinity of…
  3. HYDROLANT 2360/15 · Cable ops2015-09-21 → 2015-09-24
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  4. HYDROLANT 2358/15 · Wrecks2015-09-21 → 2015-10-02
    Obstruction, 16.6 meters above seabed, marked by buoy, yellow, fl (5) y 20 sec, in 53-30.82N 000-44.11E
  5. HYDROLANT 2357/15 · Nav aids2015-09-21 → 2015-09-23
    Mrcc aberdeen mf r/t service at greg ness 57-08N 002-03W unreliable
  6. HYDROLANT 2339/15 · Cable ops2015-09-19 → 2015-09-21
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  7. HYDROLANT 2332/15 · Cable ops2015-09-18 → 2015-09-19
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  8. HYDROLANT 2326/15 · Cable ops2015-09-18 → 2015-09-18
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable along…
  9. HYDROLANT 2322/15 · Cable ops2015-09-17 → 2015-09-25
    Seismic survey in progress until further notice by M/V polar duchess towing ten 8500 meter long cables in…
  10. HYDROLANT 2315/15 · Cable ops2015-09-17 → 2015-09-18
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable in area…
  11. HYDROLANT 2314/15 · Nav aids2015-09-17 → 2015-09-21
    Mrcc aberdeen mf r/t service at greg ness 57-08N 002-03W off air
  12. HYDROLANT 2310/15 · Surveys2015-09-17 → 2015-09-17
    Underwater operations in progress until further notice by M/V island vanguard in 56-32.4N 000-58.3E
  13. HYDROLANT 2306/15 · Nav aids2015-09-16 → 2015-09-17
    Dgps station at greg ness 57-08N 002-03W off air
  14. HYDROLANT 2302/15 · Nav aids2015-09-16 → 2015-09-27
    All navigational aids at platform 44/18A, 54-26.9N 002-28.8E inoperative
  15. HYDROLANT 2297/15 · Cable ops2015-09-16 → 2015-09-17
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  16. HYDROLANT 2294/15 · Nav aids2015-09-15 → 2015-10-02
    Ensign platform 53-35.4N 001-46.4E unlit and fog signal inoperative
  17. HYDROLANT 2289/15 · Other2015-09-15 → 2015-09-18
    Fishing gear reported adrift in 58-54.5N 001-35.7E at 131900Z sep
  18. HYDROLANT 2284/15 · Cable ops2015-09-14 → 2015-09-16
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  19. HYDROLANT 2279/15 · Nav aids2015-09-14 → 2015-09-18
    All navigational aids at platform tethys 53-39.1N 002-03.5E inoperative
  20. HYDROLANT 2275/15 · Other2015-09-13 → 2015-09-15
    Fishing gear abandoned vicinity 58-54.5N 001-35.7E

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