Southern Ocean

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

in force
3
last 12 months
4
since 1999
3,132
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

Icebergs2,99195%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 3010/21 · Icebergs2021-12-09 → 2021-12-10
    Icebergs reported in: a. B09I, 59-13S 032-37W
  2. HYDROLANT 3004/21 · Icebergs2021-12-08 → 2021-12-09
    Icebergs reported in: a. B09I 59-14S 032-45W
  3. HYDROLANT 3003/21 · Icebergs2021-12-08 → 2021-12-09
    Icebergs reported in: a. A63, 62-20S 050-38W
  4. HYDROLANT 2997/21 · Icebergs2021-12-07 → 2021-12-08
    Icebergs reported in: a. B09I 59-17S 032-52W
  5. HYDROLANT 2995/21 · Icebergs2021-12-07 → 2021-12-08
    Icebergs reported in: a. A63, 62-20S 050-38W
  6. HYDROLANT 2990/21 · Icebergs2021-12-06 → 2021-12-07
    Icebergs reported in: a. 61-48S 050-13W b. 62-04S 050-07W c. 58-49S 029-31W d. 63-57S 053-36W e. 62-29S…
  7. HYDROLANT 2989/21 · Icebergs2021-12-06 → 2021-12-07
    Icebergs reported in: a. A63, 62-20S 050-38W
  8. HYDROLANT 2985/21 · Icebergs2021-12-05 → 2021-12-06
    Icebergs reported in: a. B09I, 59-23S 033-04W
  9. HYDROLANT 2984/21 · Icebergs2021-12-05 → 2021-12-06
    Icebergs reported in: a. A63, 62-20S 050-38W
  10. HYDROLANT 2981/21 · Icebergs2021-12-04 → 2021-12-05
    Icebergs reported in: a. A63, 62-33S 051-08W
  11. HYDROLANT 2980/21 · Icebergs2021-12-04 → 2021-12-05
    Icebergs reported in: a. B09I, 59-26S 033-07W
  12. HYDROLANT 2978/21 · Icebergs2021-12-03 → 2021-12-04
    Icebergs reported in: a. B09I, 59-26S 033-07W
  13. HYDROLANT 2977/21 · Icebergs2021-12-03 → 2021-12-04
    Icebergs reported in: a. A63, 62-33S 051-08W
  14. HYDROLANT 2969/21 · Icebergs2021-12-02 → 2021-12-03
    Icebergs reported in: a. A63, 62-33S 051-08W
  15. HYDROLANT 2968/21 · Icebergs2021-12-02 → 2021-12-03
    Icebergs reported in: a. B09I, 59-26S 033-07W
  16. HYDROLANT 2961/21 · Icebergs2021-12-01 → 2021-12-02
    Icebergs reported in: a. A63, 62-33S 051-08W
  17. HYDROLANT 2960/21 · Icebergs2021-12-01 → 2021-12-02
    Icebergs reported in: a. B09I, 59-27S 033-04W
  18. HYDROLANT 2956/21 · Icebergs2021-11-30 → 2021-12-01
    Icebergs reported in: a. A63, 62-33S 051-08W
  19. HYDROLANT 2955/21 · Icebergs2021-11-30 → 2021-12-01
    Icebergs reported in: a. B09I, 59-30S 033-09W
  20. HYDROLANT 2938/21 · Icebergs2021-11-29 → 2021-11-30
    Icebergs reported in: a. A63, 62-33S 051-08W

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