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 1904/15 · Cable ops2015-08-04 → 2015-08-06
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable in area…
  2. HYDROLANT 1903/15 · Other2015-08-04 → 2015-08-05
    All navigational aids at platforms inoperative: a. 49/17-DD, 53-26.4N 002-23.1E
  3. HYDROLANT 1895/15 · Other2015-08-03 → 2015-08-04
    All navigational aids at platforms inoperative: a. 49/17-DD, 53-26.4N 002-23.1E
  4. HYDROLANT 1887/15 · Cable ops2015-08-02 → 2015-08-04
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  5. HYDROLANT 1872/15 · Cable ops2015-07-31 → 2015-08-02
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable vicinity…
  6. HYDROLANT 1848/15 · Cable ops2015-07-28 → 2015-07-31
    Seismic survey in progress until further notice by M/V western regent towing 8400 meter long cable in area…
  7. HYDROLANT 1838/15 · Nav aids2015-07-26 → 2015-07-27
    All navigational aids at platform 48/20-PN 53-27.8N 001-55.1E inoperative
  8. HYDROLANT 1831/15 · Nav aids2015-07-25 → 2015-07-28
    RACON at platform 49/22 europa 53-14.8N 002-17.7E inoperative
  9. HYDROLANT 1830/15 · Cable ops2015-07-25 → 2015-08-19
    Seismic survey in progress until further notice by M/V fugro searcher in area bound by 58-08.2N 000-47.6W,…
  10. HYDROLANT 1815/15 · Cable ops2015-07-23 → 2015-08-11
    Seismic survey in progress until further notice by M/V ramform challenger towing 12 7500 meter long cables…
  11. HYDROLANT 1780/15 · Surveys2015-07-19 → 2015-07-21
    Underwater operations in progress until further notice by M/V kommandor with submersible vicinity of…
  12. HYDROLANT 1769/15 · Nav aids2015-07-18 → 2015-07-18
    Mrcc aberdeen mf dsc and r/t service at greg ness 57-08N 002-03W off air
  13. HYDROLANT 1764/15 · Nav aids2015-07-17 → 2015-08-10
    All navigational aids at platform 44/17-MH, 54-26.1N 002-18.0E inoperative
  14. HYDROLANT 1757/15 · Surveys2015-07-17 → 2015-08-13
    Survey operations in progress until further notice by M/V icebeam towing equipment in area bound by 51-58.0N…
  15. HYDROLANT 1708/15 · Nav aids2015-07-13 → 2015-07-13
    Firths voe light 60-27.3N 001-10.8W unreliable
  16. HYDROLANT 1707/15 · Nav aids2015-07-13 → 2015-07-17
    Dgps station at north foreland light 51-22.5N 001-26.7E off air 0800Z to 1600Z daily 13 thru 17 jul
  17. HYDROLANT 1670/15 · Surveys2015-07-08 → 2015-07-15
    Underwater operations in progress until further notice by M/V kommandor vicinity of trackline joining…
  18. HYDROLANT 1668/15 · Nav aids2015-07-08 → 2015-07-09
    Bell rock light 56-26.1N 002-23.2W unreliable
  19. HYDROLANT 1651/15 · Surveys2015-07-07 → 2015-07-08
    Underwater operations in progress until further notice by M/V kommandor with submersible vicinity of…
  20. HYDROLANT 1650/15 · Nav aids2015-07-07 → 2015-07-08
    Hoo stack light 60-15.0N 001-05.4W unlit

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