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 2826/14 · Nav aids2014-11-21 → 2014-11-21
    All navigational aids at platform 49/16, 53-27.90N 002-02.46E inoperative
  2. HYDROLANT 2819/14 · Nav aids2014-11-20 → 2015-01-01
    Fog signal at platform 49/27-H, 53-00.3N 002-12.9E inoperative
  3. HYDROLANT 2809/14 · Other2014-11-19 → 2014-11-21
    Humber lightfloat 53-39.1N 000-20.0E temporarily replaced by buoy, green, fl w 10 sec
  4. HYDROLANT 2803/14 · Nav aids2014-11-19 → 2014-11-19
    Humber lightfloat 53-39.1N 000-20.0E missing
  5. HYDROLANT 2763/14 · Other2014-11-15 → 2014-11-21
    Meteorological mast removal in progress until further notice by M/V pacific orca in 55-06.0N 002-42.2E
  6. HYDROLANT 2762/14 · Other2014-11-15 → 2014-11-16
    Pipelaying operations in progress until further notice by M/V sms shoalbuster vicinity of trackline joining…
  7. HYDROLANT 2759/14 · Surveys2014-11-15 → 2014-11-16
    Underwater operations in progress until further notice by M/V cable one with submersible vicinity 53-17.0N…
  8. HYDROLANT 2707/14 · Nav aids2014-11-10 → 2014-11-16
    Mrcc humber mf dsc and r/t services at cullercoats 55-04N 001-28W off air 110800Z to 161800Z nov
  9. HYDROLANT 2704/14 · Nav aids2014-11-10 → 2014-12-22
    All navigational aids at platform 48/25-PUR, 53-14.4N 001-58.2E inoperative
  10. HYDROLANT 2693/14 · Nav aids2014-11-08 → 2014-11-09
    Hoo stack light 60-15.0N 001-05.2W unlit
  11. HYDROLANT 2691/14 · Nav aids2014-11-08 → 2014-11-11
    All navigational aids at platform 49/10A 53-43.0N 002-51.2E inoperative
  12. HYDROLANT 2684/14 · Wrecks2014-11-07 → 2014-11-16
    Submerged obstruction marked by orange buoy reported in 53-17.0N 001-24.5E
  13. HYDROLANT 2631/14 · Other2014-10-29 → 2015-04-02
    Unexploded ordnance in 52-18.13N 002-44.09E
  14. HYDROLANT 2629/14 · Other2014-10-29 → 2015-04-02
    Unexploded ordnance in 52-23.14N 002-46.09E
  15. HYDROLANT 2625/14 · Other2014-10-29 → 2014-12-22
    All navigational aids at platforms inoperative: a. 49/17-DD, 53-26.4N 002-23.6E
  16. HYDROLANT 2619/14 · Nav aids2014-10-28 → 2014-11-06
    Mrcc aberdeen mf r/t and mf dsc service at greg ness 57-08N 002-03W off air
  17. HYDROLANT 2610/14 · Other2014-10-27 → 2014-10-29
    All navigational aids at platforms inoperative: a. 49/17-CD, 53-25.3N 002-22.2E
  18. HYDROLANT 2592/14 · Nav aids2014-10-25 → 2014-10-28
    Fog signal at platform 48/10-ND, 53-43.5N 001-53.8E inoperative
  19. HYDROLANT 2589/14 · Other2014-10-25 → 2014-10-27
    All navigational aids at platforms inoperative: a. 49/17-DD, 53-26.4N 002-23.6E
  20. HYDROLANT 2588/14 · Nav aids2014-10-25 → 2014-10-29
    All navigational aids at platform 44/21A 54-14.6N 002-09.3E 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.