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 1349/08 · Nav aids2008-08-19 → 2008-08-22
    Nga chart 37005 (16TH ed)
  2. HYDROLANT 1320/08 · Nav aids2008-08-12 → 2008-08-13
    Nga chart 35013 (0 ed)
  3. HYDROLANT 1309/08 · Nav aids2008-08-09 → 2009-07-11
    Nga chart 35059 (1ST ed)
  4. HYDROLANT 1293/08 · Nav aids2008-08-06 → 2008-08-13
    Nga chart 35000 (26TH ed)
  5. HYDROLANT 1268/08 · Nav aids2008-08-03 → 2008-08-11
    Nga chart 37059 (0 ed)
  6. HYDROLANT 1204/08 · Other2008-07-20 → 2008-07-22
    Bombing exercises by M/V smit dee 211000Z to 211130Z and 220800Z to 221130Z jul in area bound by 55-02N…
  7. HYDROLANT 1175/08 · Nav aids2008-07-14 → 2008-07-15
    Nga chart 35000 (26TH ed)
  8. HYDROLANT 1137/08 · Nav aids2008-07-08 → 2008-07-09
    Mrcc humber dsc and rt service 55-31N 001-37W unreliable
  9. HYDROLANT 1134/08 · Nav aids2008-07-08 → 2008-07-10
    Nga chart 37120 (3RD ed)
  10. HYDROLANT 1105/08 · Wrecks2008-07-03 → 2008-08-03
    Nga chart 37055 (0 ed)
  11. HYDROLANT 1075/08 · Nav aids2008-06-29 → 2008-08-07
    Nga chart 37057 (2ND ed)
  12. HYDROLANT 1057/08 · Nav aids2008-06-27 → 2008-06-29
    Nga chart 37058 (2ND ed)
  13. HYDROLANT 993/08 · Nav aids2008-06-16 → 2008-07-09
    Nga chart 37057 (0 ed)
  14. HYDROLANT 990/08 · Surveys2008-06-15 → 2008-07-01
    Survey operations in progress until further notice by M/V aurelia in area bound by 53-21.9N 000-58.4E,…
  15. HYDROLANT 989/08 · Other2008-06-15 → 2008-06-15
    Nga chart 37057 (0 ed)
  16. HYDROLANT 988/08 · Other2008-06-15 → 2008-10-31
    Nga chart 37166 (2ND ed)
  17. HYDROLANT 987/08 · Other2008-06-14 → 2008-06-15
    Nga chart 37166 (2ND ed)
  18. HYDROLANT 975/08 · Nav aids2008-06-12 → 2008-06-12
    Nga chart 35170 (4TH ed)
  19. HYDROLANT 966/08 · Nav aids2008-06-10 → 2008-06-11
    Nga chart 35006 (1ST ed)
  20. HYDROLANT 964/08 · Nav aids2008-06-10 → 2008-06-10
    Nga chart 35170 (4TH ed)

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