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 1530/20 · Icebergs2020-05-04 → 2020-05-05
    Icebergs reported in: a. A68A, 60-27S 050-12W
  2. HYDROLANT 1529/20 · Icebergs2020-05-04 → 2020-05-05
    Icebergs reported in: a. A64, 69-44S 060-57W
  3. HYDROLANT 1515/20 · Icebergs2020-05-03 → 2020-05-04
    Icebergs reported in: a. A64, 69-44S 060-57W
  4. HYDROLANT 1514/20 · Icebergs2020-05-03 → 2020-05-04
    Icebergs reported in: a. A68A, 60-32S 050-15W
  5. HYDROLANT 1504/20 · Icebergs2020-05-02 → 2020-05-03
    Icebergs reported in: a. A64, 69-44S 060-57W
  6. HYDROLANT 1503/20 · Icebergs2020-05-02 → 2020-05-03
    Icebergs reported in: a. A68A, 60-30S 050-18W
  7. HYDROLANT 1497/20 · Icebergs2020-05-01 → 2020-05-02
    Icebergs reported in: a. A64, 69-44S 060-57W
  8. HYDROLANT 1496/20 · Icebergs2020-05-01 → 2020-05-02
    Icebergs reported in: a. A68A, 60-32S 050-17W
  9. HYDROLANT 1484/20 · Icebergs2020-04-30 → 2020-05-01
    Icebergs reported in: a. A64, 69-44S 060-57W
  10. HYDROLANT 1483/20 · Icebergs2020-04-30 → 2020-05-01
    Icebergs reported in: a. A68A, 60-33S 050-30W
  11. HYDROLANT 1463/20 · Icebergs2020-04-29 → 2020-04-30
    Icebergs reported in: a. A64, 69-44S 060-57W
  12. HYDROLANT 1461/20 · Icebergs2020-04-29 → 2020-04-30
    Icebergs reported in: a. A68A, 60-31S 050-29W
  13. HYDROLANT 1455/20 · Icebergs2020-04-28 → 2020-04-29
    Icebergs reported in: a. A64, 69-44S 060-57W
  14. HYDROLANT 1454/20 · Icebergs2020-04-28 → 2020-04-28
    Icebergs reported in: a. A64, 69-44S 060-57W
  15. HYDROLANT 1453/20 · Icebergs2020-04-28 → 2020-04-29
    Icebergs reported in: a. A68A, 60-33S 050-18W
  16. HYDROLANT 1442/20 · Icebergs2020-04-27 → 2020-04-28
    Icebergs reported in: a. A64, 69-44S 060-57W
  17. HYDROLANT 1441/20 · Icebergs2020-04-27 → 2020-04-28
    Icebergs reported in: a. A68A, 60-33S 050-17W
  18. HYDROLANT 1435/20 · Icebergs2020-04-26 → 2020-04-27
    Icebergs reported in: a. A68A, 60-35S 050-12W
  19. HYDROLANT 1434/20 · Icebergs2020-04-26 → 2020-04-27
    Icebergs reported in: a. A64, 69-44S 060-57W
  20. HYDROLANT 1424/20 · Icebergs2020-04-25 → 2020-04-26
    Icebergs reported in: a. A64, 69-44S 060-57W

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