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 1379/18 · Icebergs2018-04-10 → 2018-04-11
    Icebergs reported in: a. B09F, 61-52S 054-25W
  2. HYDROPAC 1363/18 · Icebergs2018-04-09 → 2018-04-10
    Icebergs reported in: a. B09F, 61-52S 054-25W
  3. HYDROPAC 1349/18 · Icebergs2018-04-08 → 2018-04-08
    Icebergs reported in: a. B09F, 61-52S 054-25W
  4. HYDROPAC 1334/18 · Icebergs2018-04-07 → 2018-04-08
    Icebergs reported in: a. B09F, 61-52S 054-25W
  5. HYDROPAC 1322/18 · Icebergs2018-04-06 → 2018-04-07
    Icebergs reported in: a. B09F, 61-52S 054-25W
  6. HYDROPAC 1309/18 · Icebergs2018-04-05 → 2018-04-06
    Icebergs reported in: a. B09F, 61-52S 054-25W
  7. HYDROPAC 1297/18 · Icebergs2018-04-04 → 2018-04-05
    Icebergs reported in: a. B09F, 61-52S 054-25W
  8. HYDROPAC 1275/18 · Icebergs2018-04-03 → 2018-04-04
    Icebergs reported in: a. B22A, 74-04S 108-55W
  9. HYDROPAC 1257/18 · Icebergs2018-04-02 → 2018-04-03
    Icebergs reported in: a. B22A, 74-04S 108-55W
  10. HYDROPAC 1252/18 · Icebergs2018-04-01 → 2018-04-02
    Icebergs reported in: a. B22A, 74-04S 108-55W
  11. HYDROPAC 1246/18 · Icebergs2018-03-31 → 2018-04-01
    Icebergs reported in: a. B22A, 74-04S 108-55W
  12. HYDROPAC 1218/18 · Icebergs2018-03-29 → 2018-03-30
    Icebergs reported in: a. B22A, 74-04S 108-55W
  13. HYDROPAC 1192/18 · Icebergs2018-03-27 → 2018-03-28
    Icebergs reported in: a. B22A, 74-04S 108-55W
  14. HYDROPAC 1174/18 · Icebergs2018-03-25 → 2018-03-26
    Icebergs reported in: a. B22A, 74-04S 108-55W
  15. HYDROPAC 1164/18 · Icebergs2018-03-24 → 2018-03-25
    Icebergs reported in: a. B22A, 74-04S 108-55W
  16. HYDROPAC 1148/18 · Icebergs2018-03-23 → 2018-03-24
    Icebergs reported in: a. B22A, 74-04S 108-54W
  17. HYDROPAC 1128/18 · Icebergs2018-03-22 → 2018-03-23
    Icebergs reported in: a. B22A, 74-04S 108-54W
  18. HYDROPAC 1088/18 · Icebergs2018-03-19 → 2018-03-20
    Icebergs reported in: a. B22A, 74-04S 108-54W
  19. HYDROLANT 933/18 · Icebergs2018-03-19 → 2018-03-19
    Icebergs reported in: a. B15T, 60-20S 050-31W
  20. HYDROPAC 1079/18 · Icebergs2018-03-18 → 2018-03-19
    Icebergs reported in: a. B22A, 74-04S 108-54W

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