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 2020/16 · Cable ops2016-08-09 → 2016-09-11
    Seismic survey in progress until further notice by M/V ramform vanguard towing 12 8100 meter long cables in…
  2. HYDROLANT 2015/16 · Nav aids2016-08-09 → 2016-08-09
    Sumburgh head light 59-51.2N 001-16.5W unreliable
  3. HYDROLANT 2008/16 · Nav aids2016-08-08 → 2016-09-19
    All navigational aids at platform 48/15B-PXW, 53-34.1N 001-58.3E inoperative
  4. HYDROLANT 2003/16 · Other2016-08-08 → 2016-08-30
    Unexploded ordnance vicinity of trackline joining 52-07.22N 001-45.12E, 52-05.59N 001-47.26E, 52-03.77N…
  5. HYDROLANT 1995/16 · Surveys2016-08-07 → 2016-08-30
    Survey operations in progress until further notice by M/V titan discovery vicinity of trackline joining…
  6. HYDROLANT 1965/16 · Nav aids2016-08-04 → 2016-08-04
    Vatsetter whitehill light 60-34.8N 001-00.2W unreliable
  7. HYDROLANT 1962/16 · Nav aids2016-08-03 → 2016-08-10
    All navigational aids at platform 49/16, 53-23.2N 002-08.9E inoperative
  8. HYDROLANT 1961/16 · Other2016-08-03 → 2016-08-30
    Unexploded ordnance: a. 52-09.93N 001-42.82E
  9. HYDROLANT 1952/16 · Cable ops2016-08-02 → 2016-10-05
    Scotland-northeast coast shetland islands
  10. HYDROLANT 1941/16 · Cable ops2016-08-01 → 2016-08-07
    Underwater operations in progress until further notice by cableship pierre de fermat vicinity of trackline…
  11. HYDROLANT 1921/16 · Nav aids2016-07-29 → 2016-08-03
    Rova head light 60-11.4N 001-08.5W unreliable
  12. HYDROLANT 1907/16 · Nav aids2016-07-28 → 2016-09-08
    All navigational aids at platform 49/22-ZD, 53-19.5N 002-14.3E inoperative
  13. HYDROLANT 1906/16 · Cable ops2016-07-28 → 2016-08-12
    Seismic survey in progress until further notice by M/V sanco swift towing 12 8000 meter long cables in area…
  14. HYDROARC 146/16 · Cable ops2016-07-28 → 2016-08-12
    Seismic survey in progress until further notice by M/V sanco swift towing 12 8000 meter long cables in area…
  15. HYDROLANT 1890/16 · Cable ops2016-07-25 → 2016-09-03
    Seismic survey in progress until further notice by M/V polarcus asima towing eight two mile long cables in…
  16. HYDROLANT 1854/16 · Nav aids2016-07-22 → 2016-07-22
    Auskerry light 59-01.5N 002-34.3W unlit
  17. HYDROLANT 1839/16 · Nav aids2016-07-20 → 2016-08-08
    All navigational aids at platform 42/30-B 54-03.6N 000-54.0E inoperative
  18. HYDROLANT 1820/16 · Nav aids2016-07-19 → 2016-07-21
    Dgps station at north foreland light 51-22.5N 001-26.9E off air 0800Z to 1600Z daily 19 thru 21 jul
  19. HYDROLANT 1802/16 · Cable ops2016-07-17 → 2016-08-02
    Seismic survey in progress until further notice by M/V nordic explorer towing 8000 meter long cable in area…
  20. HYDROLANT 1795/16 · Surveys2016-07-16 → 2016-08-30
    Underwater operations in progress until further notice by M/V trya vicinity 51-21.38N 001-33.68E

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