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 2672/16 · Nav aids2016-10-13 → 2016-10-13
    All navigational aids at platform 48/15B-PXW, 53-34.1N 001-58.3E inoperative
  2. HYDROLANT 2620/16 · Cable ops2016-10-07 → 2016-10-17
    Underwater operations in progress until further notice by cableship pierre de fermat with submersible…
  3. HYDROLANT 2602/16 · Nav aids2016-10-06 → 2016-10-06
    Dgps station at north foreland light 51-22.5N 001-26.7E off air 061030Z to 061230Z oct
  4. HYDROLANT 2576/16 · Nav aids2016-10-04 → 2016-11-03
    Mrcc aberdeen mf dsc service at greg ness 57-08N 002-03W off air
  5. HYDROLANT 2573/16 · Nav aids2016-10-03 → 2016-11-14
    Fog signal at platform 12/21C jacky, 58-11.0N 002-58.8W inoperative
  6. HYDROLANT 2559/16 · Cable ops2016-10-01 → 2016-10-26
    Seismic survey in progress until further notice by M/V sanco swift towing 12 9000 meter long cables in area…
  7. HYDROLANT 2523/16 · Nav aids2016-09-28 → 2016-11-09
    Fog signal at platform 9/13-SPM3, 59-32.0N 001-33.5E inoperative
  8. HYDROLANT 2519/16 · Nav aids2016-09-27 → 2016-09-28
    NAVTEX station cullercoats (g) 55-04.5N 001-27.8W off air
  9. HYDROLANT 2517/16 · Nav aids2016-09-27 → 2016-10-28
    Wind turbine E17, 51-24.40N 001-40.80E unlit and fog signal unreliable
  10. HYDROLANT 2509/16 · Nav aids2016-09-27 → 2016-10-13
    All navigational aids at platform 44/23 a-cm, 54-12.2N 002-27.1E inoperative
  11. HYDROLANT 2507/16 · Nav aids2016-09-26 → 2016-09-27
    Dgps station at north foreland light 51-22.5N 001-26.7E off air
  12. HYDROLANT 2495/16 · Nav aids2016-09-25 → 2016-09-26
    Dgps station at sumburgh head light 59-51.2N 001-16.5W unreliable
  13. HYDROLANT 2486/16 · Other2016-09-23 → 2016-10-29
    Unexploded ordnance in 51-14.14N 001-26.51E
  14. HYDROLANT 2483/16 · Cable ops2016-09-23 → 2016-11-08
    Seismic survey in progress until further notice by M/V polarcus asima towing eight two mile long cables in…
  15. HYDROLANT 2466/16 · Wrecks2016-09-22 → 2016-10-13
    Submerged obstructions marked by floats in: a. 56-11.71N 002-40.35W
  16. HYDROLANT 2443/16 · Nav aids2016-09-19 → 2016-10-10
    All navigational aids at platform 48/15B-PXW, 53-34.1N 001-58.3E inoperative
  17. HYDROLANT 2441/16 · Nav aids2016-09-19 → 2017-04-07
    RACON (t) established at platform FPF1 56-46.9N 002-06.5E
  18. HYDROLANT 2395/16 · Nav aids2016-09-14 → 2016-09-15
    All navigational aids at platform 49/18-A, 53-21.8N 002-34.0E inoperative
  19. HYDROLANT 2394/16 · Nav aids2016-09-14 → 2016-09-16
    All navigational aids at platform 49/23-D, 53-18.1N 002-29.9E inoperative
  20. HYDROLANT 2375/16 · Nav aids2016-09-13 → 2016-10-03
    All navigational aids at platform 49/11A-PWD, 53-32.4N 002-00.9E inoperative

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