Southern Ocean

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

in force
3
last 12 months
4
since 1999
3,132
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

Icebergs2,99195%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 2937/21 · Icebergs2021-11-29 → 2021-11-30
    Icebergs reported in: a. B09I, 59-30S 033-09W
  2. HYDROLANT 2929/21 · Icebergs2021-11-28 → 2021-11-29
    Icebergs reported in: a. A63, 62-33S 051-08W
  3. HYDROLANT 2928/21 · Icebergs2021-11-28 → 2021-11-29
    Icebergs reported in: a. B09I, 59-30S 033-10W
  4. HYDROLANT 2925/21 · Icebergs2021-11-27 → 2021-11-28
    Icebergs reported in: a. B09I, 59-31S 033-09W
  5. HYDROLANT 2924/21 · Icebergs2021-11-27 → 2021-11-28
    Icebergs reported in: a. A63, 62-33S 051-08W
  6. HYDROLANT 2913/21 · Icebergs2021-11-26 → 2021-11-27
    Icebergs reported in: a. B09I, 59-32S 033-06W
  7. HYDROLANT 2912/21 · Icebergs2021-11-26 → 2021-11-27
    Icebergs reported in: a. A63, 62-50S 050-53W
  8. HYDROLANT 2900/21 · Icebergs2021-11-25 → 2021-11-26
    Icebergs reported in: a. 59-34S 033-02W
  9. HYDROLANT 2896/21 · Icebergs2021-11-25 → 2021-11-26
    Icebergs reported in: a. A63, 63-50S 050-53W
  10. HYDROLANT 2885/21 · Icebergs2021-11-24 → 2021-11-25
    Icebergs reported in: a. A63, 63-49.8S 050-52.8W
  11. HYDROLANT 2884/21 · Icebergs2021-11-24 → 2021-11-25
    Icebergs reported in: a. B09I, 59-35S 033-00W
  12. HYDROLANT 2883/21 · Nav aids2021-11-24 → 2021-12-15
    RACON (m) 63-19.5S 057-57.0W inoperative
  13. HYDROLANT 2880/21 · Icebergs2021-11-23 → 2021-11-24
    Icebergs reported in: a. B09I, 59-36S 032-57W
  14. HYDROLANT 2870/21 · Icebergs2021-11-22 → 2021-11-23
    Icebergs reported in: a. B09I, 59-39S 032-51W
  15. HYDROLANT 2863/21 · Icebergs2021-11-21 → 2021-11-22
    Icebergs reported in: a. 62-29S 050-00W
  16. HYDROLANT 2855/21 · Icebergs2021-11-20 → 2021-11-21
    Icebergs reported in: a. 62-31S 050-54W
  17. HYDROLANT 2850/21 · Icebergs2021-11-19 → 2021-11-20
    Icebergs reported in: a. 62-37S 050-47W
  18. HYDROLANT 2841/21 · Icebergs2021-11-18 → 2021-11-19
    Icebergs reported in: a. 62-40S 050-46W
  19. HYDROLANT 2840/21 · Icebergs2021-11-18 → 2021-11-19
    Icebergs reported in: a. A63, 63-11S 050-58W
  20. HYDROLANT 2834/21 · Icebergs2021-11-17 → 2021-11-18
    Icebergs reported in: a. A63, 63-11S 050-58W

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