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 2583/22 · Icebergs2022-10-11 → 2022-10-12
    Icebergs reported in: a. A76A, 59-51.00S 050-34.00W
  2. HYDROLANT 2574/22 · Icebergs2022-10-10 → 2022-10-11
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  3. HYDROLANT 2564/22 · Icebergs2022-10-09 → 2022-10-10
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  4. HYDROLANT 2558/22 · Icebergs2022-10-08 → 2022-10-09
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  5. HYDROLANT 2557/22 · Icebergs2022-10-08 → 2022-10-09
    Icebergs reported in: a. A76A, 60-05.00S 050-52.00W
  6. HYDROLANT 2555/22 · Icebergs2022-10-08 → 2022-10-09
    Icebergs reported in: a. A76A, 60-13.00S 051-02.00W
  7. HYDROLANT 2550/22 · Icebergs2022-10-07 → 2022-10-08
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  8. HYDROLANT 2541/22 · Icebergs2022-10-06 → 2022-10-07
    Icebergs reported in: a. A76A, 60-13.00S 051-02.00W
  9. HYDROLANT 2540/22 · Icebergs2022-10-06 → 2022-10-07
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  10. HYDROLANT 2528/22 · Icebergs2022-10-05 → 2022-10-06
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  11. HYDROLANT 2527/22 · Icebergs2022-10-05 → 2022-10-06
    Icebergs reported in: a. A76A, 60-14.00S 051-07.00W
  12. HYDROLANT 2524/22 · Missiles2022-10-05 → 2022-10-11
    Hazardous operations, space debris 0300Z to 0500Z daily 10 and 11 oct in area bound by 59-42.60S 165-49.20E,…
  13. HYDROPAC 2786/22 · Missiles2022-10-05 → 2022-10-11
    Hazardous operations, space debris 0300Z to 0500Z daily 10 and 11 oct in area bound by 59-42.60S 165-49.20E,…
  14. HYDROLANT 2516/22 · Icebergs2022-10-04 → 2022-10-05
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  15. HYDROLANT 2506/22 · Icebergs2022-10-03 → 2022-10-04
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  16. HYDROLANT 2505/22 · Icebergs2022-10-03 → 2022-10-04
    Icebergs reported in: a. A76A, 60-22.00S 051-13.00W
  17. HYDROLANT 2502/22 · Icebergs2022-10-02 → 2022-10-03
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  18. HYDROLANT 2495/22 · Icebergs2022-10-01 → 2022-10-02
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  19. HYDROLANT 2488/22 · Icebergs2022-09-30 → 2022-10-01
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W
  20. HYDROLANT 2474/22 · Icebergs2022-09-29 → 2022-09-30
    Icebergs reported in: a. A64, 64-42.00S 055-48.00W

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