North Sea

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

in force
1
last 12 months
6
since 1997
4,731
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%
Other66914%
Cable ops65814%
Surveys58312%
Wrecks1704%
Containers441%
Derelicts341%
Exercises321%
Debris291%
Mines90%
Missiles10%

Archive · 4,730 cancelled

  1. HYDROLANT 2263/10 · Nav aids2010-11-26 → 2010-11-26
    Nga chart 37057 (2ND ed)
  2. HYDROLANT 2262/10 · Nav aids2010-11-26 → 2010-11-26
    Nga chart 37057 (2ND ed)
  3. HYDROLANT 2253/10 · Nav aids2010-11-25 → 2010-11-26
    Nga chart 37057 (2ND ed)
  4. HYDROLANT 2242/10 · Nav aids2010-11-23 → 2011-01-04
    Nga chart 37057 (2ND ed)
  5. HYDROLANT 2224/10 · Nav aids2010-11-20 → 2010-12-09
    Nga chart 37058 (2ND ed)
  6. HYDROLANT 2223/10 · Wrecks2010-11-20 → 2010-11-27
    Nga chart 37040 (1ST ed)
  7. HYDROLANT 2220/10 · Nav aids2010-11-20 → 2010-12-13
    Nga chart 37058 (2ND ed)
  8. HYDROLANT 2212/10 · Nav aids2010-11-19 → 2010-11-27
    Nga chart 37059 (o ed)
  9. HYDROLANT 2204/10 · Nav aids2010-11-19 → 2010-11-24
    Nga chart 37166 (2ND ed)
  10. HYDROLANT 2196/10 · Nav aids2010-11-18 → 2010-11-19
    Nga chart 37166 (3RD ed)
  11. HYDROLANT 2168/10 · Nav aids2010-11-15 → 2010-11-15
    Dsc station noss head 58-29N 003-03W off air
  12. HYDROLANT 2158/10 · Cable ops2010-11-13 → 2010-11-15
    Underwater operations in progress until further notice by cableship wave sentinel with submersible vicinity…
  13. HYDROLANT 2150/10 · Other2010-11-12 → 2010-11-14
    Nga chart 37140 (33RD ed)
  14. HYDROLANT 2144/10 · Nav aids2010-11-11 → 2010-11-12
    Fog signal at flamborough head light 54-07N 000-05W inoperative
  15. HYDROLANT 2085/10 · Nav aids2010-11-02 → 2010-11-06
    Fog signal at flamborough head light 54-07.0N 000-04.9W inoperative
  16. HYDROLANT 2081/10 · Wrecks2010-11-01 → 2011-02-26
    Nga chart 37120 (3RD ed)
  17. HYDROLANT 2069/10 · Nav aids2010-10-30 → 2010-10-31
    Nga chart 37055 (17TH ed)
  18. HYDROLANT 2064/10 · Nav aids2010-10-29 → 2010-11-20
    Nga chart 37058 (2ND ed)
  19. HYDROLANT 2031/10 · Nav aids2010-10-27 → 2010-10-27
    Nga chart 35172 (3RD ed)
  20. HYDROLANT 2001/10 · Cable ops2010-10-22 → 2010-11-06
    Underwater operations in progress until further notice by cableship wave sentinel with submersible vicinity…

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