North Sea

IHO sea area 4 · -4° to 12° E, 51° to 61° N

in force
1
last 12 months
7
since 1997
4,732
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 aids2,50353%
Other66914%
Cable ops65814%
Surveys58312%
Wrecks1704%
Containers441%
Derelicts341%
Exercises321%
Debris291%
Mines90%
Missiles10%

Archive · 4,731 cancelled

  1. HYDROLANT 2450/02 · Nav aids2002-11-06 → 2002-12-07
    RACON at dyck buoy 51-03N 001-52E inoperative
  2. HYDROLANT 2446/02 · Nav aids2002-11-05 → 2002-11-18
    Cromer light 52-55.5N 001-19.1E range temporarily reduced to 16 miles
  3. HYDROLANT 2437/02 · Containers2002-11-02 → 2002-11-08
    Container adrift vicinity 57-31.3N 001-37.4W at 021343Z nov
  4. HYDROLANT 2436/02 · Nav aids2002-11-02 → 2002-11-06
    Dyck buoy 51-03N 001-52E missing
  5. HYDROLANT 2387/02 · Nav aids2002-10-28 → 2002-11-02
    Dyck buoy 51-03N 001-52E unlit and RACON inoperative
  6. HYDROLANT 2381/02 · Nav aids2002-10-27 → 2002-10-28
    RACON at winterton light 52-43N 001-42E inoperative
  7. HYDROLANT 2375/02 · Nav aids2002-10-27 → 2002-10-27
    Cromer light 52-56N 001-19E unreliable
  8. HYDROLANT 2356/02 · Other2002-10-24 → 2002-10-25
    Copinsay light 58-53.8N 002-40.2W at reduced intensity
  9. HYDROLANT 2299/02 · Nav aids2002-10-17 → 2002-10-19
    Sandettie lightfloat 51-09.3N 001-47.2E off station and RACON unreliable
  10. HYDROLANT 2245/02 · Nav aids2002-10-10 → 2002-10-10
    RACON at cromer light 52-55N 001-19E unreliable 100800Z to 101100Z oct
  11. HYDROLANT 2233/02 · Nav aids2002-10-08 → 2002-10-08
    Dgps station at sumburgh head light 59-51.2N 001-16.5W unreliable 081300Z to 081400Z oct
  12. HYDROLANT 2229/02 · Nav aids2002-10-07 → 2002-10-07
    Dgps station at sumburgh head light 59-51.2N 001-16.5W unreliable until 071600Z oct
  13. HYDROLANT 2223/02 · Nav aids2002-10-05 → 2002-10-06
    Dgps station at flambourough head light 54-07N 000-05W at reduced power
  14. HYDROLANT 2205/02 · Nav aids2002-10-04 → 2002-11-18
    Sandettie east buoy 51-15N 002-03E unlit
  15. HYDROLANT 2204/02 · Nav aids2002-10-04 → 2002-10-04
    Cromer light 52-55.5N 001-19.1E unlit 040900Z to 041600Z oct
  16. HYDROLANT 2188/02 · Nav aids2002-10-02 → 2002-10-02
    Flambourough head light 54-07N 000-05W unreliable
  17. HYDROLANT 2163/02 · Other2002-09-27 → 2002-09-27
    Skroo light 59-33N 001-37W at reduced intensity
  18. HYDROLANT 2132/02 · Nav aids2002-09-22 → 2002-09-23
    Cantick head light 58-47N 003-08W unreliable
  19. HYDROLANT 2126/02 · Other2002-09-22 → 2002-09-23
    Sumburgh head light 59-51.2N 001-16.5W at reduced intensity
  20. HYDROLANT 2090/02 · Nav aids2002-09-18 → 2002-10-01
    Bergues buoy 51-17N 002-19E 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.