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 1485/18 · Icebergs2018-05-12 → 2018-05-13
    Icebergs reported in: a. B09F, 61-55S 054-12W
  2. HYDROLANT 1476/18 · Icebergs2018-05-11 → 2018-05-12
    Icebergs reported in: a. B09F, 61-47S 053-41W
  3. HYDROPAC 1795/18 · Icebergs2018-05-11 → 2018-05-12
    Iceberg B31 reported in 65-12S 075-53W
  4. HYDROLANT 1466/18 · Icebergs2018-05-10 → 2018-05-11
    Icebergs reported in: a. B09F, 61-42S 054-07W
  5. HYDROPAC 1774/18 · Icebergs2018-05-10 → 2018-05-11
    Iceberg B31 reported in 65-10S 079-14W
  6. HYDROLANT 1452/18 · Icebergs2018-05-09 → 2018-05-10
    Icebergs reported in: a. B09F, 61-42S 054-07W
  7. HYDROPAC 1762/18 · Icebergs2018-05-09 → 2018-05-10
    Iceberg B31 reported in 65-10S 079-14W
  8. HYDROPAC 1748/18 · Icebergs2018-05-07 → 2018-05-08
    Iceberg B31 reported in 65-21S 076-02W
  9. HYDROLANT 1429/18 · Icebergs2018-05-07 → 2018-05-08
    Icebergs reported in: a. B09F, 61-46S 054-00W
  10. HYDROPAC 1743/18 · Icebergs2018-05-06 → 2018-05-07
    Iceberg B31 reported in 65-21S 076-02W
  11. HYDROLANT 1424/18 · Icebergs2018-05-06 → 2018-05-07
    Icebergs reported in: a. B09F, 61-46S 054-00W
  12. HYDROPAC 1731/18 · Icebergs2018-05-05 → 2018-05-06
    Iceberg B31 reported in 65-10S 079-14W
  13. HYDROLANT 1416/18 · Icebergs2018-05-05 → 2018-05-06
    Icebergs reported in: a. B09F, 61-42S 054-07W
  14. HYDROPAC 1718/18 · Icebergs2018-05-04 → 2018-05-05
    Iceberg B31 reported in 65-10S 079-14W
  15. HYDROLANT 1407/18 · Icebergs2018-05-04 → 2018-05-05
    Icebergs reported in: a. B09F, 61-42S 054-07W
  16. HYDROPAC 1705/18 · Icebergs2018-05-03 → 2018-05-04
    Iceberg B31 reported in 65-10S 079-14W
  17. HYDROLANT 1398/18 · Icebergs2018-05-03 → 2018-05-04
    Icebergs reported in: a. B09F, 61-42S 054-07W
  18. HYDROLANT 1390/18 · Icebergs2018-05-02 → 2018-05-03
    Icebergs reported in: a. B09F, 61-46S 054-00W
  19. HYDROPAC 1700/18 · Icebergs2018-05-02 → 2018-05-03
    Iceberg B31 reported in 65-21S 076-02W
  20. HYDROLANT 1376/18 · Icebergs2018-05-01 → 2018-05-02
    Icebergs reported in: a. B09F, 61-46S 054-00W

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