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 1736/19 · Icebergs2019-06-07 → 2019-06-08
    Icebergs reported in: a. A57A, 53-52S 045-50W
  2. HYDROLANT 1728/19 · Icebergs2019-06-06 → 2019-06-07
    Icebergs reported in: a. A57A, 53-52S 045-50W
  3. HYDROLANT 1702/19 · Icebergs2019-06-03 → 2019-06-04
    Icebergs reported in: a. A57A, 55-59S 046-26W
  4. HYDROLANT 1692/19 · Icebergs2019-06-02 → 2019-06-03
    Icebergs reported in: a. A57A, 55-59S 046-26W
  5. HYDROLANT 1682/19 · Icebergs2019-06-01 → 2019-06-02
    Icebergs reported in: a. A57A, 55-59S 046-26W
  6. HYDROLANT 1653/19 · Icebergs2019-05-30 → 2019-05-31
    Icebergs reported in: a. A57A, 55-59S 046-26W
  7. HYDROLANT 1638/19 · Icebergs2019-05-29 → 2019-05-30
    Icebergs reported in: a. A57A, 55-59S 046-26W
  8. HYDROLANT 1627/19 · Icebergs2019-05-28 → 2019-05-29
    Icebergs reported in: a. A57A, 57-30S 049-47W
  9. HYDROLANT 1609/19 · Icebergs2019-05-27 → 2019-05-28
    Icebergs reported in: a. A57A, 57-30S 049-47W
  10. HYDROLANT 1595/19 · Icebergs2019-05-26 → 2019-05-27
    Icebergs reported in: a. A57A, 57-30S 049-47W
  11. HYDROLANT 1590/19 · Icebergs2019-05-25 → 2019-05-26
    Icebergs reported in: a. A57A, 57-30S 049-47W
  12. HYDROLANT 1584/19 · Icebergs2019-05-24 → 2019-05-25
    Icebergs reported in: a. A57A, 57-30S 049-47W
  13. HYDROLANT 1566/19 · Icebergs2019-05-23 → 2019-05-24
    Icebergs reported in: a. A57A, 57-30S 049-47W
  14. HYDROLANT 1546/19 · Icebergs2019-05-22 → 2019-05-23
    Icebergs reported in: a. A57A, 57-30S 049-47W
  15. HYDROPAC 1697/19 · Missiles2019-05-22 → 2019-05-28
    Hazardous operations, space debris 0600Z to 0800Z daily 27 and 28 may in area bound by 59-42.6S 165-49.2E,…
  16. HYDROLANT 1537/19 · Icebergs2019-05-21 → 2019-05-22
    Icebergs reported in: a. B09F, 56-47S 041-53W
  17. HYDROLANT 1528/19 · Icebergs2019-05-20 → 2019-05-21
    Icebergs reported in: a. A57A, 57-30S 049-47W
  18. HYDROLANT 1523/19 · Icebergs2019-05-19 → 2019-05-21
    Icebergs reported in: a. B09F, 56-47S 041-53W
  19. HYDROLANT 1498/19 · Icebergs2019-05-16 → 2019-05-17
    Icebergs reported in: a. B09F, 56-47S 041-53W
  20. HYDROLANT 1488/19 · Icebergs2019-05-15 → 2019-05-16
    Icebergs reported in: a. B09F, 56-47S 041-53W

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