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 3092/22 · Icebergs2022-12-01 → 2022-12-02
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  2. HYDROLANT 3091/22 · Icebergs2022-12-01 → 2022-12-02
    Icebergs reported in: a. A76A, 59-02.00S 049-17.00W
  3. HYDROLANT 3085/22 · Icebergs2022-11-30 → 2022-12-01
    Icebergs reported in: a. A76A, 59-01.00S 049-03.00W
  4. HYDROLANT 3084/22 · Icebergs2022-11-30 → 2022-12-01
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  5. HYDROLANT 3076/22 · Icebergs2022-11-29 → 2022-11-30
    Icebergs reported in: a. A76A, 58-57.00S 048-54.00W
  6. HYDROLANT 3075/22 · Icebergs2022-11-29 → 2022-11-30
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  7. HYDROLANT 3067/22 · Icebergs2022-11-28 → 2022-11-29
    Icebergs reported in: a. A76A, 58-54.00S 048-44.00W
  8. HYDROLANT 3066/22 · Icebergs2022-11-28 → 2022-11-29
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  9. HYDROLANT 3053/22 · Icebergs2022-11-27 → 2022-11-28
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  10. HYDROLANT 3052/22 · Icebergs2022-11-27 → 2022-11-28
    Icebergs reported in: a. A76A 59-01.00S 048-41.00W
  11. HYDROLANT 3049/22 · Icebergs2022-11-26 → 2022-11-27
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  12. HYDROLANT 3048/22 · Icebergs2022-11-26 → 2022-11-27
    Icebergs reported in: a. A69A, 61-34.00S 051-16.00W
  13. HYDROLANT 3038/22 · Icebergs2022-11-25 → 2022-11-25
    Icebergs reported in: a. A76A, 59-07S 048-34W
  14. HYDROLANT 3025/22 · Icebergs2022-11-24 → 2022-11-25
    Icebergs reported in: a. A76A 59-12.00S 048-37.00W
  15. HYDROLANT 3024/22 · Icebergs2022-11-24 → 2022-11-25
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  16. HYDROLANT 3009/22 · Icebergs2022-11-23 → 2022-11-24
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  17. HYDROLANT 3008/22 · Icebergs2022-11-23 → 2022-11-24
    Icebergs reported in: a. A76A, 58-56.00S 048-36.00W
  18. HYDROPAC 3340/22 · Missiles2022-11-23 → 2022-11-29
    Hazardous operations, space debris 1500Z to 1700Z daily 27 thru 30 nov in area bound by 59-42.60S…
  19. HYDROLANT 2998/22 · Icebergs2022-11-22 → 2022-11-23
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  20. HYDROLANT 2997/22 · Icebergs2022-11-22 → 2022-11-23
    Icebergs reported in: a. A76A, 59-23.00S 048-51.00W

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