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. HYDROPAC 1690/18 · Icebergs2018-05-01 → 2018-05-02
    Iceberg B31 reported in 65-21S 076-02W
  2. HYDROPAC 1682/18 · Icebergs2018-04-30 → 2018-05-01
    Icebergs reported in: a. B09F, 61-42S 054-07W
  3. HYDROPAC 1674/18 · Icebergs2018-04-29 → 2018-04-30
    Icebergs reported in: a. B09F, 61-42S 054-07W
  4. HYDROPAC 1666/18 · Icebergs2018-04-28 → 2018-04-29
    Icebergs reported in: a. B09F, 61-42S 054-07W
  5. HYDROPAC 1654/18 · Icebergs2018-04-27 → 2018-04-28
    Icebergs reported in: a. B09F, 61-41S 053-42W
  6. HYDROPAC 1630/18 · Icebergs2018-04-26 → 2018-04-27
    Icebergs reported in: a. B09F, 61-41S 053-42W
  7. HYDROPAC 1612/18 · Icebergs2018-04-25 → 2018-04-26
    Icebergs reported in: a. B09F, 61-41S 053-42W
  8. HYDROPAC 1595/18 · Icebergs2018-04-24 → 2018-04-25
    Icebergs reported in: a. B09F, 61-41S 053-42W
  9. HYDROPAC 1582/18 · Icebergs2018-04-23 → 2018-04-24
    Icebergs reported in: a. B09F, 61-41S 053-42W
  10. HYDROPAC 1567/18 · Icebergs2018-04-22 → 2018-04-23
    Icebergs reported in: a. B09F, 61-41S 053-42W
  11. HYDROPAC 1561/18 · Icebergs2018-04-21 → 2018-04-22
    Icebergs reported in: a. B09F, 61-41S 053-42W
  12. HYDROPAC 1552/18 · Icebergs2018-04-20 → 2018-04-21
    Icebergs reported in: a. B09F, 61-41S 053-42W
  13. HYDROPAC 1525/18 · Icebergs2018-04-19 → 2018-04-20
    Icebergs reported in: a. B09F, 61-41S 053-42W
  14. HYDROPAC 1507/18 · Icebergs2018-04-18 → 2018-04-19
    Icebergs reported in: a. B09F, 61-41S 053-42W
  15. HYDROPAC 1484/18 · Icebergs2018-04-17 → 2018-04-18
    Icebergs reported in: a. B09F, 61-41S 053-42W
  16. HYDROPAC 1471/18 · Icebergs2018-04-16 → 2018-04-17
    Icebergs reported in: a. B09F, 61-51S 054-12W
  17. HYDROPAC 1459/18 · Icebergs2018-04-15 → 2018-04-16
    Icebergs reported in: a. B09F, 61-51S 054-12W
  18. HYDROPAC 1450/18 · Icebergs2018-04-14 → 2018-04-15
    Icebergs reported in: a. B09F, 61-51S 054-12W
  19. HYDROPAC 1443/18 · Icebergs2018-04-14 → 2018-04-15
    Icebergs reported in: a. B09F, 61-51S 054-12W
  20. HYDROPAC 1410/18 · Icebergs2018-04-12 → 2018-04-13
    Icebergs reported in: a. B09F, 61-51S 054-12W

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