Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
3
since 1999
3,131
categories
9

In force now · 3

  1. HYDROLANT 1570/26 · Icebergs2026-08-14
    Icebergs reported in the Scotia Sea and Antarctica at several coordinates; message cancels August 15, 2026, 06:32 UTC.
  2. HYDROPAC 2289/26 · Missiles2026-08-10
    Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
  3. HYDROLANT 1279/26 · Icebergs2026-06-30
    Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.

Longest in force

  1. HYDROLANT 1279/26 · Icebergs2026-06-30
    Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.
  2. HYDROPAC 2289/26 · Missiles2026-08-10
    Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
  3. HYDROLANT 1570/26 · Icebergs2026-08-14
    Icebergs reported in the Scotia Sea and Antarctica at several coordinates; message cancels August 15, 2026, 06:32 UTC.

By year

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

Icebergs2,99095%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,128 cancelled

  1. HYDROLANT 1003/22 · Icebergs2022-04-08 → 2022-04-09
    Icebergs reported in: a. A64, 66-53S 059-30W
  2. HYDROLANT 1002/22 · Icebergs2022-04-08 → 2022-04-09
    Icebergs reported in: a. B09I, 54-50S 028-21W
  3. HYDROLANT 991/22 · Icebergs2022-04-07 → 2022-04-08
    Icebergs reported in: a. A64, 66-53S 059-30W
  4. HYDROLANT 990/22 · Icebergs2022-04-07 → 2022-04-08
    Icebergs reported in: a. B09I, 54-53S 028-28W
  5. HYDROLANT 979/22 · Icebergs2022-04-06 → 2022-04-07
    Icebergs reported in: a. A64, 66-53S 059-30W
  6. HYDROLANT 978/22 · Icebergs2022-04-06 → 2022-04-07
    Icebergs reported in: a. B09I, 54-53S 028-37W
  7. HYDROLANT 973/22 · Icebergs2022-04-05 → 2022-04-06
    Icebergs reported in: a. A64, 66-53S 059-30W
  8. HYDROLANT 971/22 · Icebergs2022-04-05 → 2022-04-06
    Icebergs reported in: a. B09I, 54-52S 028-46W
  9. HYDROLANT 962/22 · Icebergs2022-04-04 → 2022-04-05
    Icebergs reported in: a. A64, 66-53S 059-30W
  10. HYDROLANT 961/22 · Icebergs2022-04-04 → 2022-04-05
    Icebergs reported in: a. B09I, 54-51S 028-49W
  11. HYDROLANT 952/22 · Icebergs2022-04-03 → 2022-04-04
    Icebergs reported in: a. A64, 66-58S 059-36W
  12. HYDROLANT 951/22 · Icebergs2022-04-03 → 2022-04-04
    Icebergs reported in: a. B09I, 54-52S 028-51W
  13. HYDROLANT 945/22 · Icebergs2022-04-02 → 2022-04-03
    Icebergs reported in: a. A64, 66-58S 059-36W
  14. HYDROLANT 944/22 · Icebergs2022-04-02 → 2022-04-03
    Icebergs reported in: a. B09I, 54-54S 028-54W
  15. HYDROLANT 936/22 · Icebergs2022-04-01 → 2022-04-02
    Icebergs reported in: a. B09I, 54-52S 028-56W
  16. HYDROLANT 935/22 · Icebergs2022-04-01 → 2022-04-02
    Icebergs reported in: a. A64, 66-58S 059-36W
  17. HYDROLANT 928/22 · Icebergs2022-03-31 → 2022-04-01
    Icebergs reported in: a. B09I, 54-52S 029-10W
  18. HYDROLANT 925/22 · Icebergs2022-03-31 → 2022-04-01
    Icebergs reported in: a. A64, 66-58S 059-36W
  19. HYDROLANT 914/22 · Icebergs2022-03-30 → 2022-03-31
    Icebergs reported in: a. A64, 66-58S 059-36W
  20. HYDROLANT 913/22 · Icebergs2022-03-30 → 2022-03-31
    Icebergs reported in: a. B09I, 54-52S 029-10W

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