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 101/24 · Icebergs2024-01-13 → 2024-01-14
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  2. HYDROLANT 90/24 · Icebergs2024-01-12 → 2024-01-13
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  3. HYDROLANT 84/24 · Icebergs2024-01-11 → 2024-01-12
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  4. HYDROLANT 76/24 · Icebergs2024-01-10 → 2024-01-11
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  5. HYDROLANT 67/24 · Icebergs2024-01-09 → 2024-01-10
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  6. HYDROLANT 57/24 · Icebergs2024-01-08 → 2024-01-09
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  7. HYDROLANT 53/24 · Icebergs2024-01-07 → 2024-01-08
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  8. HYDROLANT 49/24 · Icebergs2024-01-06 → 2024-01-07
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  9. HYDROLANT 34/24 · Icebergs2024-01-05 → 2024-01-06
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  10. HYDROLANT 27/24 · Icebergs2024-01-04 → 2024-01-05
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  11. HYDROLANT 15/24 · Icebergs2024-01-03 → 2024-01-04
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  12. HYDROLANT 9/24 · Icebergs2024-01-02 → 2024-01-03
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  13. HYDROLANT 2/24 · Icebergs2024-01-01 → 2024-01-02
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  14. HYDROLANT 2989/23 · Icebergs2023-12-31 → 2024-01-01
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  15. HYDROLANT 2980/23 · Icebergs2023-12-30 → 2023-12-31
    Icebergs reported in: a. A23A, 61-50.40S 051-44.40W
  16. HYDROLANT 2970/23 · Icebergs2023-12-29 → 2023-12-30
    Icebergs reported in: a. A23A, 62-01.20S 052-13.80W
  17. HYDROLANT 2962/23 · Icebergs2023-12-28 → 2023-12-29
    Icebergs reported in: a. A23A, 62-01.20S 052-13.80W
  18. HYDROLANT 2952/23 · Icebergs2023-12-27 → 2023-12-28
    Icebergs reported in: a. A23A, 62-01.20S 052-13.80W
  19. HYDROLANT 2946/23 · Icebergs2023-12-26 → 2023-12-27
    Icebergs reported in: a. A23A, 62-01.20S 052-13.80W
  20. HYDROLANT 2942/23 · Icebergs2023-12-25 → 2023-12-26
    Icebergs reported in: a. A23A, 62-01.20S 052-13.80W

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