Southern Ocean

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

in force
3
last 12 months
5
since 1999
3,133
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

Icebergs2,99295%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,130 cancelled

  1. HYDROLANT 1640/20 · Icebergs2020-05-14 → 2020-05-15
    Icebergs reported in: a. A68A, 60-26S 050-06W
  2. HYDROLANT 1631/20 · Icebergs2020-05-13 → 2020-05-14
    Icebergs reported in: a. A68A, 60-27S 050-05W
  3. HYDROLANT 1630/20 · Icebergs2020-05-13 → 2020-05-14
    Icebergs reported in: a. A64, 69-44S 060-57W
  4. HYDROLANT 1618/20 · Icebergs2020-05-12 → 2020-05-13
    Icebergs reported in: a. A64, 69-44S 060-57W
  5. HYDROLANT 1617/20 · Icebergs2020-05-12 → 2020-05-13
    Icebergs reported in: a. A68A, 60-28S 050-08W
  6. HYDROLANT 1599/20 · Icebergs2020-05-11 → 2020-05-12
    Icebergs reported in: a. A68A, 60-29S 050-17W
  7. HYDROLANT 1598/20 · Icebergs2020-05-11 → 2020-05-12
    Icebergs reported in: a. A64, 69-44S 060-57W
  8. HYDROLANT 1594/20 · Icebergs2020-05-10 → 2020-05-11
    Icebergs reported in: a. A68A, 60-28S 050-14W
  9. HYDROLANT 1593/20 · Icebergs2020-05-10 → 2020-05-11
    Icebergs reported in: a. A64, 69-44S 060-57W
  10. HYDROLANT 1589/20 · Icebergs2020-05-10 → 2020-05-13
    Iceberg reported in 62-36S 058-24W
  11. HYDROLANT 1588/20 · Icebergs2020-05-09 → 2020-05-10
    Icebergs reported in: a. A64, 69-44S 060-57W
  12. HYDROLANT 1586/20 · Icebergs2020-05-09 → 2020-05-10
    Icebergs reported in: a. A68A, 60-30S 050-17W
  13. HYDROLANT 1579/20 · Icebergs2020-05-08 → 2020-05-09
    Icebergs reported in: a. A64, 69-44S 060-57W
  14. HYDROLANT 1578/20 · Icebergs2020-05-08 → 2020-05-09
    Icebergs reported in: a. A68A, 60-29S 050-25W
  15. HYDROLANT 1562/20 · Icebergs2020-05-07 → 2020-05-08
    Icebergs reported in: a. A68A, 60-29S 050-25W
  16. HYDROLANT 1561/20 · Icebergs2020-05-07 → 2020-05-08
    Icebergs reported in: a. A64, 69-44S 060-57W
  17. HYDROLANT 1551/20 · Icebergs2020-05-06 → 2020-05-07
    Icebergs reported in: a. A64, 69-44S 060-57W
  18. HYDROLANT 1549/20 · Icebergs2020-05-06 → 2020-05-07
    Icebergs reported in: a. A68A, 60-29S 050-28W
  19. HYDROLANT 1539/20 · Icebergs2020-05-05 → 2020-05-06
    Icebergs reported in: a. A64, 69-44S 060-57W
  20. HYDROLANT 1538/20 · Icebergs2020-05-05 → 2020-05-06
    Icebergs reported in: a. A68A, 60-30S 050-28W

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