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 1700/18 · Icebergs2018-05-30 → 2018-05-31
    Icebergs reported in: a. B09F 61-55S 053-51W
  2. HYDROPAC 2038/18 · Icebergs2018-05-29 → 2018-05-30
    Iceberg B31 reported in 63-46S 073-28W
  3. HYDROLANT 1688/18 · Icebergs2018-05-29 → 2018-05-30
    Icebergs reported in: a. B09F 61-55S 053-51W
  4. HYDROPAC 2034/18 · Icebergs2018-05-28 → 2018-05-29
    Icebergs reported in: a. B09F, 61-42S 054-05W
  5. HYDROPAC 2019/18 · Icebergs2018-05-27 → 2018-05-28
    Icebergs reported in: a. B09F, 61-42S 054-05W
  6. HYDROLANT 1620/18 · Icebergs2018-05-23 → 2018-05-24
    Icebergs reported in: a. B09F, 61-42S 054-05W
  7. HYDROPAC 1945/18 · Icebergs2018-05-22 → 2018-05-23
    Icebergs reported in: a. B09F, 61-42S 054-05W
  8. HYDROPAC 1937/18 · Icebergs2018-05-22 → 2018-05-23
    Iceberg B31 reported in 66-53S 075-51W
  9. HYDROLANT 1596/18 · Icebergs2018-05-22 → 2018-05-23
    Icebergs reported in: a. B09F 61-42S 054-05W
  10. HYDROLANT 1572/18 · Icebergs2018-05-19 → 2018-05-20
    Icebergs reported in: a. B09F 61-55S 054-12W
  11. HYDROPAC 1915/18 · Icebergs2018-05-19 → 2018-05-20
    Iceberg B31 reported in 66-43S 076-36W
  12. HYDROPAC 1907/18 · Icebergs2018-05-18 → 2018-05-19
    Iceberg B31 reported in 66-43S 076-36W
  13. HYDROLANT 1560/18 · Icebergs2018-05-18 → 2018-05-19
    Icebergs reported in: a. B09F 61-55S 054-12W
  14. HYDROPAC 1862/18 · Icebergs2018-05-15 → 2018-05-16
    Iceberg B31 reported in 66-43S 076-36W
  15. HYDROLANT 1523/18 · Icebergs2018-05-15 → 2018-05-16
    Icebergs reported in: a. B09F, 61-55S 054-12W
  16. HYDROLANT 1512/18 · Icebergs2018-05-14 → 2018-05-15
    Icebergs reported in: a. B09F, 61-55S 054-12W
  17. HYDROPAC 1843/18 · Icebergs2018-05-14 → 2018-05-15
    Iceberg B31 reported in 66-43S 076-36W
  18. HYDROLANT 1496/18 · Icebergs2018-05-13 → 2018-05-14
    Icebergs reported in: a. B09F, 61-55S 054-12W
  19. HYDROPAC 1827/18 · Icebergs2018-05-13 → 2018-05-14
    Iceberg B31 reported in 66-43S 076-36W
  20. HYDROPAC 1814/18 · Icebergs2018-05-12 → 2018-05-13
    Iceberg B31 reported in 66-43S 075-36W

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