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 2032/23 · Icebergs2023-09-09 → 2023-09-10
    Iceberg reported in: a. A23A, 65-43.20S 053-28.80W
  2. HYDROLANT 2031/23 · Icebergs2023-09-09 → 2023-09-10
    Iceberg reported in 61-15.80S 053-59.50W
  3. HYDROLANT 2022/23 · Icebergs2023-09-08 → 2023-09-09
    Icebergs reported in: a. A23A, 65-43.20S 053-28.80W
  4. HYDROLANT 2018/23 · Icebergs2023-09-07 → 2023-09-08
    Icebergs reported in: a. A23A, 65-43.20S 053-28.80W
  5. HYDROLANT 2006/23 · Icebergs2023-09-06 → 2023-09-07
    Icebergs reported in: a. A23A, 65-43.20S 053-28.80W
  6. HYDROLANT 1999/23 · Icebergs2023-09-05 → 2023-09-06
    Icebergs reported in: a. A23A, 65-43.20S 053-28.80W
  7. HYDROLANT 1992/23 · Icebergs2023-09-05 → 2023-09-08
    Iceberg reported in vicinity 61-23.80S 054-09.40W
  8. HYDROLANT 1986/23 · Icebergs2023-09-04 → 2023-09-05
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  9. HYDROLANT 1978/23 · Icebergs2023-09-03 → 2023-09-04
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  10. HYDROLANT 1972/23 · Icebergs2023-09-02 → 2023-09-03
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  11. HYDROLANT 1966/23 · Icebergs2023-09-01 → 2023-09-02
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  12. HYDROLANT 1956/23 · Icebergs2023-08-31 → 2023-09-01
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  13. HYDROLANT 1946/23 · Icebergs2023-08-30 → 2023-08-31
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  14. HYDROLANT 1939/23 · Icebergs2023-08-29 → 2023-08-30
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  15. HYDROLANT 1935/23 · Icebergs2023-08-29 → 2023-09-01
    Iceberg reported in vicinity 60-10.40S 054-06.80W
  16. HYDROLANT 1934/23 · Icebergs2023-08-29 → 2023-09-01
    Iceberg reported in vicinity 61-37.00S 054-00.80W
  17. HYDROLANT 1927/23 · Icebergs2023-08-28 → 2023-08-29
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  18. HYDROLANT 1923/23 · Icebergs2023-08-27 → 2023-08-28
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  19. HYDROLANT 1914/23 · Icebergs2023-08-26 → 2023-08-27
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  20. HYDROLANT 1906/23 · Icebergs2023-08-25 → 2023-08-26
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W

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