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 1722/14 · Other2014-07-15 → 2014-07-18
    Survey equipment and 79 meter long cable adrift vicinity 53-15.9N 001-22.7E
  2. HYDROLANT 1717/14 · Nav aids2014-07-15 → 2014-07-15
    England-southeast Coast
  3. HYDROLANT 1697/14 · Cable ops2014-07-12 → 2014-07-14
    Pipeline operations in progress until further notice by M/V deep cygnus along trackline joining 58-29N…
  4. HYDROLANT 1684/14 · Derelicts2014-07-11 → 2014-07-12
    Derelict 17 foot S/V, white hull, adrift in 53-27N 002-30E at 110943Z jul
  5. HYDROLANT 1682/14 · Nav aids2014-07-11 → 2014-08-21
    Southern North Sea
  6. HYDROLANT 1677/14 · Nav aids2014-07-10 → 2014-07-11
    Orkney Islands
  7. HYDROLANT 1642/14 · Nav aids2014-07-06 → 2014-07-08
    Orkney Islands
  8. HYDROLANT 1627/14 · Other2014-07-04 → 2014-07-07
    16 meter long mast with rigging adrift in 59-19.1N 000-01.0E at 041050Z jul
  9. HYDROLANT 1617/14 · Nav aids2014-07-02 → 2014-07-22
    Cancel HYDROLANT 1556/14
  10. HYDROLANT 1609/14 · Other2014-07-01 → 2015-04-02
    North Sea
  11. HYDROLANT 1600/14 · Nav aids2014-06-30 → 2014-06-30
    Orkney Islands
  12. HYDROLANT 1598/14 · Nav aids2014-06-29 → 2014-07-24
    B. 49/12-AR, 53-32.1N 002-15.2E
  13. HYDROLANT 1575/14 · Nav aids2014-06-27 → 2014-06-28
    Orkney Islands
  14. HYDROLANT 1556/14 · Nav aids2014-06-25 → 2014-07-02
    Dover Strait
  15. HYDROLANT 1493/14 · Other2014-06-16 → 2015-04-02
    Cancel HYDROLANT 1442/14
  16. HYDROLANT 1464/14 · Cable ops2014-06-12 → 2014-08-31
    Seismic survey in progress until further notice by M/V munin explorer in area bound by 57-44.4N 000-47.9E,…
  17. HYDROLANT 1459/14 · Nav aids2014-06-11 → 2014-06-12
    Cancel HYDROLANT 1443/14
  18. HYDROLANT 1444/14 · Nav aids2014-06-09 → 2014-06-12
    Cancel this msg 121700Z jun 14
  19. HYDROLANT 1443/14 · Nav aids2014-06-09 → 2014-06-11
    Cancel this msg 111900Z jun 14
  20. HYDROLANT 1442/14 · Other2014-06-09 → 2014-06-16
    Netherlands

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