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 3101/21 · Icebergs2021-12-18 → 2021-12-19
    Icebergs reported in: a. B09I, 58-31S 031-08W
  2. HYDROLANT 3100/21 · Icebergs2021-12-18 → 2021-12-19
    Icebergs reported in: a. A64, 67-09S 060-13W
  3. HYDROLANT 3096/21 · Icebergs2021-12-17 → 2021-12-18
    Icebergs reported in: a. B09I, 58-35S 031-18W
  4. HYDROLANT 3095/21 · Icebergs2021-12-17 → 2021-12-18
    Icebergs reported in: a. A64, 67-09S 060-13W
  5. HYDROLANT 3078/21 · Icebergs2021-12-16 → 2021-12-17
    Icebergs reported in: a. A64, 67-09S 060-13W
  6. HYDROLANT 3077/21 · Icebergs2021-12-16 → 2021-12-17
    Icebergs reported in: a. B09I, 58-35S 031-18W
  7. HYDROLANT 3065/21 · Icebergs2021-12-15 → 2021-12-16
    Icebergs reported in: a. A64, 67-09S 060-13W
  8. HYDROLANT 3063/21 · Icebergs2021-12-15 → 2021-12-16
    Icebergs reported in: a. B09I, 58-38S 031-20W
  9. HYDROLANT 3057/21 · Icebergs2021-12-14 → 2021-12-15
    Icebergs reported in: a. B09I, 58-49S 031-29W
  10. HYDROLANT 3056/21 · Icebergs2021-12-14 → 2021-12-15
    Icebergs reported in: a. A64, 67-09S 060-13W
  11. HYDROLANT 3043/21 · Icebergs2021-12-13 → 2021-12-14
    Icebergs reported in: a. B09I, 58-49S 031-29W
  12. HYDROLANT 3042/21 · Icebergs2021-12-13 → 2021-12-14
    Icebergs reported in: a. A64, 67-09S 060-13W
  13. HYDROLANT 3039/21 · Icebergs2021-12-12 → 2021-12-13
    Icebergs reported in: a. B09I, 59-02S 031-45W
  14. HYDROLANT 3036/21 · Icebergs2021-12-12 → 2021-12-13
    Icebergs reported in: a. A63, 62-20S 050-38W
  15. HYDROLANT 3033/21 · Icebergs2021-12-11 → 2021-12-12
    Icebergs reported in: a. B09I, 59-08S 032-06W
  16. HYDROLANT 3032/21 · Icebergs2021-12-11 → 2021-12-12
    Icebergs reported in: a. A63, 62-20S 050-38W
  17. HYDROLANT 3026/21 · Icebergs2021-12-10 → 2021-12-11
    Icebergs reported in: a. B09I, 59-11S 032-24W
  18. HYDROLANT 3025/21 · Icebergs2021-12-10 → 2021-12-11
    Icebergs reported in: a. A63, 62-20S 050-38W
  19. HYDROLANT 3011/21 · Icebergs2021-12-09 → 2021-12-10
    Icebergs reported in: a. A63, 62-20S 050-38W
  20. HYDROLANT 3010/21 · Icebergs2021-12-09 → 2021-12-10
    Icebergs reported in: a. B09I, 59-13S 032-37W

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