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 1423/20 · Icebergs2020-04-25 → 2020-04-26
    Icebergs reported in: a. A68A, 60-35S 050-17W
  2. HYDROLANT 1415/20 · Icebergs2020-04-24 → 2020-04-25
    Icebergs reported in: a. A68A, 60-38S 050-18W
  3. HYDROLANT 1401/20 · Icebergs2020-04-23 → 2020-04-24
    Icebergs reported in: a. A68A, 60-35S 050-13W
  4. HYDROLANT 1399/20 · Icebergs2020-04-22 → 2020-04-23
    Icebergs reported in: a. A68A, 60-40S 050-13W
  5. HYDROLANT 1398/20 · Icebergs2020-04-22 → 2020-04-23
    Icebergs reported in: a. A64, 69-44S 060-57W
  6. HYDROLANT 1392/20 · Icebergs2020-04-21 → 2020-04-22
    Icebergs reported in: a. A68A, 60-40S 050-13W
  7. HYDROLANT 1391/20 · Icebergs2020-04-21 → 2020-04-22
    Icebergs reported in: a. A64, 69-44S 060-57W
  8. HYDROLANT 1379/20 · Icebergs2020-04-20 → 2020-04-21
    Icebergs reported in: a. A64, 69-44S 060-57W
  9. HYDROLANT 1377/20 · Icebergs2020-04-20 → 2020-04-21
    Icebergs reported in: a. A68A, 60-42S 050-14W
  10. HYDROLANT 1374/20 · Icebergs2020-04-19 → 2020-04-20
    Icebergs reported in: a. A64, 69-44S 060-57W
  11. HYDROLANT 1373/20 · Icebergs2020-04-19 → 2020-04-20
    Icebergs reported in: a. A68A, 60-42S 050-14W
  12. HYDROLANT 1371/20 · Icebergs2020-04-18 → 2020-04-19
    Icebergs reported in: a. A64, 69-44S 060-57W
  13. HYDROLANT 1370/20 · Icebergs2020-04-18 → 2020-04-19
    Icebergs reported in: a. A68A, 60-45S 050-14W
  14. HYDROLANT 1365/20 · Icebergs2020-04-17 → 2020-04-18
    Icebergs reported in: a. A68A, 60-45S 050-14W
  15. HYDROLANT 1364/20 · Icebergs2020-04-17 → 2020-04-18
    Icebergs reported in: a. A64, 69-44S 060-57W
  16. HYDROLANT 1350/20 · Icebergs2020-04-16 → 2020-04-17
    Icebergs reported in: a. A64, 69-44S 060-57W
  17. HYDROLANT 1349/20 · Icebergs2020-04-16 → 2020-04-17
    Icebergs reported in: a. A68A, 60-46S 050-20W
  18. HYDROLANT 1338/20 · Icebergs2020-04-15 → 2020-04-16
    Icebergs reported in: a. A68A, 60-50S 050-16W
  19. HYDROLANT 1337/20 · Icebergs2020-04-15 → 2020-04-16
    Icebergs reported in: a. A64, 69-44S 060-57W
  20. HYDROLANT 1327/20 · Icebergs2020-04-14 → 2020-04-15
    Icebergs reported in: a. A68A, 60-47S 050-18W

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