Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
3
since 1999
3,131
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

Icebergs2,99095%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,128 cancelled

  1. HYDROLANT 3181/21 · Icebergs2021-12-28 → 2021-12-29
    Icebergs reported in: a. B09I, 57-12S 030-26W
  2. HYDROLANT 3179/21 · Icebergs2021-12-28 → 2021-12-29
    Icebergs reported in: a. A64, 67-04S 060-11W
  3. HYDROLANT 3170/21 · Icebergs2021-12-27 → 2021-12-28
    Icebergs reported in: a. A64, 67-04S 060-11W
  4. HYDROLANT 3169/21 · Icebergs2021-12-27 → 2021-12-28
    Icebergs reported in: a. B09I 57-57S 030-27W
  5. HYDROLANT 3166/21 · Icebergs2021-12-26 → 2021-12-27
    Icebergs reported in: a. B09I 58-08S 030-36W
  6. HYDROLANT 3165/21 · Icebergs2021-12-26 → 2021-12-27
    Icebergs reported in: a. A64, 67-04S 060-11W
  7. HYDROLANT 3158/21 · Icebergs2021-12-25 → 2021-12-26
    Icebergs reported in: a. B09I, 58-08S 030-34W
  8. HYDROLANT 3156/21 · Icebergs2021-12-25 → 2021-12-26
    Icebergs reported in: a. A64, 67-04S 060-11W
  9. HYDROLANT 3148/21 · Icebergs2021-12-24 → 2021-12-25
    Icebergs reported in: a. B09I, 58-10S 030-37W
  10. HYDROLANT 3146/21 · Icebergs2021-12-24 → 2021-12-25
    Icebergs reported in: a. A64, 67-04S 060-11W
  11. HYDROLANT 3139/21 · Icebergs2021-12-23 → 2021-12-24
    Icebergs reported in: a. B09I, 58-21S 030-59W
  12. HYDROLANT 3137/21 · Icebergs2021-12-23 → 2021-12-24
    Icebergs reported in: a. A64, 67-04S 060-11W
  13. HYDROLANT 3131/21 · Icebergs2021-12-22 → 2021-12-23
    Icebergs reported in: a. B09I, 58-21S 030-59W
  14. HYDROLANT 3130/21 · Icebergs2021-12-22 → 2021-12-23
    Icebergs reported in: a. A64, 67-04S 060-11W
  15. HYDROLANT 3123/21 · Icebergs2021-12-21 → 2021-12-22
    Icebergs reported in: a. B09I, 58-21S 030-59W
  16. HYDROLANT 3122/21 · Icebergs2021-12-21 → 2021-12-22
    Icebergs reported in: a. A64, 67-04S 060-11W
  17. HYDROLANT 3112/21 · Icebergs2021-12-20 → 2021-12-21
    Icebergs reported in: a. B09I, 58-21S 030-59W
  18. HYDROLANT 3111/21 · Icebergs2021-12-20 → 2021-12-21
    Icebergs reported in: a. A64, 67-04S 060-11W
  19. HYDROLANT 3106/21 · Icebergs2021-12-19 → 2021-12-20
    Icebergs reported in: a. B09I, 58-27S 031-03W
  20. HYDROLANT 3105/21 · Icebergs2021-12-19 → 2021-12-20
    Icebergs reported in: a. A64, 67-04S 060-11W

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