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 807/22 · Icebergs2022-03-20 → 2022-03-21
    Icebergs reported in: a. A64, 68-00S 060-00W
  2. HYDROLANT 806/22 · Icebergs2022-03-20 → 2022-03-21
    Icebergs reported in: a. B09I, 54-54S 029-02W
  3. HYDROLANT 801/22 · Icebergs2022-03-19 → 2022-03-20
    Icebergs reported in: a. B09I, 54-53S 029-03W
  4. HYDROLANT 800/22 · Icebergs2022-03-19 → 2022-03-20
    Icebergs reported in: a. A64, 67-04S 060-10W
  5. HYDROLANT 792/22 · Icebergs2022-03-18 → 2022-03-19
    Icebergs reported in: a. B09I, 54-54S 029-08W
  6. HYDROLANT 791/22 · Icebergs2022-03-18 → 2022-03-19
    Icebergs reported in: a. A64, 67-04S 060-10W
  7. HYDROLANT 776/22 · Icebergs2022-03-17 → 2022-03-18
    Icebergs reported in: a. A64, 67-04S 060-10W
  8. HYDROLANT 775/22 · Icebergs2022-03-17 → 2022-03-18
    Icebergs reported in: a. B09I, 54-56S 029-13W
  9. HYDROLANT 763/22 · Icebergs2022-03-16 → 2022-03-17
    Icebergs reported in: a. A64, 67-04S 060-10W
  10. HYDROLANT 762/22 · Icebergs2022-03-16 → 2022-03-17
    Icebergs reported in: a. B09I, 54-56S 029-13W
  11. HYDROLANT 755/22 · Icebergs2022-03-15 → 2022-03-16
    Icebergs reported in: a. A64, 67-04S 060-10W
  12. HYDROLANT 754/22 · Icebergs2022-03-15 → 2022-03-16
    Icebergs reported in: a. B09I, 55-00S 029-15W
  13. HYDROLANT 740/22 · Icebergs2022-03-14 → 2022-03-15
    Icebergs reported in: a. A64, 67-04S 060-10W
  14. HYDROLANT 739/22 · Icebergs2022-03-14 → 2022-03-15
    Icebergs reported in: a. B09I, 55-01S 029-16W
  15. HYDROLANT 733/22 · Icebergs2022-03-13 → 2022-03-14
    Icebergs reported in: a. A64, 67-04S 060-10W
  16. HYDROLANT 732/22 · Icebergs2022-03-13 → 2022-03-14
    Icebergs reported in: a. B09I, 54-59S 028-57W
  17. HYDROLANT 726/22 · Icebergs2022-03-12 → 2022-03-13
    Icebergs reported in: a. A64, 67-19S 060-11W
  18. HYDROLANT 725/22 · Icebergs2022-03-12 → 2022-03-13
    Icebergs reported in: a. B09I, 54-59S 028-57W
  19. HYDROLANT 721/22 · Icebergs2022-03-11 → 2022-03-12
    Icebergs reported in: a. A64, 67-19S 060-11W
  20. HYDROLANT 720/22 · Icebergs2022-03-11 → 2022-03-12
    Icebergs reported in: a. B09I, 54-59S 028-57W

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