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 3215/15 · Wrecks2015-12-30 → 2016-02-01
    Dangerous wreck in 55-19.7N 001-32.0W
  2. HYDROLANT 3214/15 · Derelicts2015-12-30 → 2016-01-02
    Derelict barge adrift vicinity 55-01N 003-33E at 301600Z dec
  3. HYDROLANT 3202/15 · Nav aids2015-12-29 → 2015-12-29
    Dgps station at sumburgh head light 59-51.3N 001-16.4W off air
  4. HYDROLANT 3200/15 · Other2015-12-28 → 2016-02-14
    All navigational aids at meteorological mast 53-10.65N 002-59.10E inoperative
  5. HYDROLANT 3196/15 · Nav aids2015-12-28 → 2015-12-29
    Sumburgh head light 59-51.2N 001-16.5W unreliable
  6. HYDROLANT 3171/15 · Nav aids2015-12-24 → 2015-12-28
    Platform 49/22-JD, 53-19.7N 002-21.8E unlit and all navigational aids inoperative
  7. HYDROLANT 3165/15 · Nav aids2015-12-23 → 2015-12-28
    All navigational aids at platform 48/25-PUR, 53-15.5N 001-58.2E inoperative
  8. HYDROLANT 3128/15 · Nav aids2015-12-18 → 2015-12-19
    RACON at sunk centre lightfloat 51-50.1N 001-46.0E inoperative
  9. HYDROLANT 3119/15 · Other2015-12-17 → 2016-01-25
    All navigational aids at platforms within three miles of 53-27N 002-20E unreliable
  10. HYDROLANT 3117/15 · Other2015-12-17 → 2015-12-17
    All navigational aids at platforms inoperative: a. 49/17-CD, 53-25.4N 002-22.6E
  11. HYDROLANT 3096/15 · Nav aids2015-12-14 → 2015-12-17
    All navigational aids at platform 49/17-HD, 53-29.9N 002-19.5E inoperative
  12. HYDROLANT 3093/15 · Nav aids2015-12-14 → 2016-01-12
    All navigational aids at platform 44/17-MH, 54-26N 002-18E inoperative
  13. HYDROLANT 3061/15 · Nav aids2015-12-09 → 2015-12-15
    Fog signal at platform 49/27-H, 53-00.3N 002-12.9E inoperative
  14. HYDROLANT 3044/15 · Nav aids2015-12-08 → 2015-12-09
    RACON at smiths knoll buoy 52-43.5N 002-17.9E inoperative
  15. HYDROLANT 3041/15 · Other2015-12-08 → 2015-12-14
    All navigational aids at platforms inoperative: a. 49/17-DD, 53-26.5N 002-23.7E
  16. HYDROLANT 2995/15 · Nav aids2015-12-03 → 2015-12-09
    All navigational aids at platform 44/26A-A, 54-03.6N 002-04.6E inoperative
  17. HYDROLANT 2985/15 · Nav aids2015-12-02 → 2016-01-13
    Platform 44/23 a-cm, 54-12.2N 002-27.1E unlit and fog signal operative
  18. HYDROLANT 2984/15 · Nav aids2015-12-02 → 2015-12-03
    All navigational aids at platform 44/26A-A, 54-03.6N 002-04.6E unreliable
  19. HYDROLANT 2965/15 · Other2015-12-01 → 2015-12-02
    All navigational aids at platforms inoperative: a. 44/26A-A, 54-03.6N 002-04.6E
  20. HYDROLANT 2923/15 · Other2015-11-26 → 2015-12-08
    All navigational aids at platforms inoperative: a. 49/17-DD, 53-26.5N 002-23.7E

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