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 954/08 · Surveys2008-06-09 → 2008-06-24
    Survey operations in progress until further notice by M/V fs laperouse towing equipment in area bound by…
  2. HYDROLANT 946/08 · Nav aids2008-06-07 → 2008-06-07
    Dsc stations inoperative: a. saxavord 60-50N 000-50W
  3. HYDROLANT 945/08 · Nav aids2008-06-07 → 2008-06-07
    Dsc stations inoperative: a. saxavord 60-50N 000-50W
  4. HYDROLANT 943/08 · Nav aids2008-06-07 → 2008-06-18
    Nga chart 37057 (0 ed)
  5. HYDROLANT 933/08 · Nav aids2008-06-05 → 2008-06-05
    Nga chart 35055 (0 ed)
  6. HYDROLANT 921/08 · Cable ops2008-06-02 → 2008-07-10
    Seismic survey in progress until further notice by M/V geolog dimitriy nalivkin towing 9000 meter long cable…
  7. HYDROLANT 906/08 · Other2008-05-30 → 2008-06-14
    Nga chart 37057 (2ND ed)
  8. HYDROLANT 893/08 · Nav aids2008-05-28 → 2008-05-28
    Nga chart 37120 (3RD ed)
  9. HYDROLANT 862/08 · Other2008-05-21 → 2008-06-14
    Nga chart 37244 (11TH ed)
  10. HYDROLANT 837/08 · Other2008-05-16 → 2008-06-14
    Nga chart 37055 (0 ed)
  11. HYDROLANT 831/08 · Wrecks2008-05-15 → 2008-07-12
    Nga chart 37057 (2ND ed)
  12. HYDROLANT 819/08 · Nav aids2008-05-14 → 2008-05-15
    Nga chart 37166 (2ND ed)
  13. HYDROLANT 817/08 · Nav aids2008-05-14 → 2008-05-14
    Nga chart 35000 (26 ed)
  14. HYDROLANT 784/08 · Other2008-05-08 → 2008-06-05
    Nga chart 37055 (0 ed)
  15. HYDROLANT 780/08 · Other2008-05-07 → 2008-05-08
    Nga chart 37055 (0 ed)
  16. HYDROLANT 768/08 · Other2008-05-06 → 2008-05-07
    Nga chart 35061 (2ND ed)
  17. HYDROLANT 753/08 · Other2008-05-03 → 2008-05-11
    Nga chart 37058 (0 ed)
  18. HYDROLANT 708/08 · Nav aids2008-04-25 → 2008-04-25
    Nga chart 35067 (1ST ed)
  19. HYDROLANT 693/08 · Other2008-04-22 → 2008-04-30
    Nga chart 37053(1ST ed)
  20. HYDROLANT 669/08 · Nav aids2008-04-19 → 2008-06-07
    Nga chart 37040 (1ST 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.