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 308/15 · Nav aids2015-02-06 → 2015-02-06
    Hoo stack light 60-15.0N 001-05.2W unlit
  2. HYDROLANT 288/15 · Other2015-02-02 → 2015-02-17
    Pipelaying operations in progress until further notice by M/V deep energy vicinity of trackline between…
  3. HYDROLANT 286/15 · Nav aids2015-02-02 → 2015-02-12
    All navigational aids at platform 48/25-PUR, 53-14.4N 001-58.2E inoperative
  4. HYDROLANT 277/15 · Nav aids2015-02-01 → 2015-02-04
    All navigational aids at platform 49/16-ED, 53-26.0N 002-09.3E inoperative
  5. HYDROLANT 274/15 · Containers2015-01-31 → 2015-02-03
    Four containers adrift in 54-53.6N 000-07.3W at 312120Z jan
  6. HYDROLANT 267/15 · Nav aids2015-01-31 → 2015-02-10
    Barrow 7 buoy 51-37.48N 001-13.47E unlit
  7. HYDROLANT 266/15 · Nav aids2015-01-31 → 2015-01-31
    Hoo stack light 60-15.0N 001-05.2W unlit
  8. HYDROLANT 263/15 · Other2015-01-30 → 2015-05-02
    Navigation prohibited within 500 meters of 56-48.43N 002-06.32E
  9. HYDROLANT 232/15 · Nav aids2015-01-27 → 2015-02-14
    All navigational aids at platform 49/17-GD, 53-26.8N 002-15.3E inoperative
  10. HYDROLANT 229/15 · Nav aids2015-01-27 → 2015-01-28
    Dgps station at flamborough head light 54-07.0N 000-04.8W unreliable 0900Z to 1600Z daily 27 and 28 jan
  11. HYDROLANT 221/15 · Nav aids2015-01-26 → 2015-01-29
    All navigational aids at platform 49/5A ST-1, 53-50.6N 002-52.1E unlit
  12. HYDROLANT 202/15 · Nav aids2015-01-24 → 2015-03-06
    Fog signal at meteorological mast 53-18.8N 000-44.8E inoperative
  13. HYDROLANT 187/15 · Nav aids2015-01-22 → 2015-01-22
    Mid falls buoy 51-18.6N 001-47.0E off station
  14. HYDROLANT 181/15 · Nav aids2015-01-21 → 2015-01-26
    Platform 49/5A ST-1, 53-50.6N 002-52.1E unlit
  15. HYDROLANT 170/15 · Nav aids2015-01-20 → 2015-01-20
    Hoo stack light 60-15.0N 001-05.2W unlit
  16. HYDROLANT 158/15 · Other2015-01-18 → 2015-01-22
    Pipelaying operations in progress until further notice by M/V deep energy vicinity of trackline between…
  17. HYDROLANT 157/15 · Nav aids2015-01-18 → 2015-01-23
    North haisbro buoy 53-00.2N 001-32.3E RACON inoperative
  18. HYDROLANT 133/15 · Nav aids2015-01-15 → 2015-02-26
    All navigational aids at platform, 53-28.0N 002-02.6E inoperative
  19. HYDROLANT 130/15 · Nav aids2015-01-15 → 2015-01-15
    Cancel this msg 151600Z jan 15
  20. HYDROLANT 106/15 · Nav aids2015-01-13 → 2015-01-21
    All navigational aids at platform kittiwake, 57-28.1N 000-30.7E 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.