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 2752/21 · Icebergs2021-11-07 → 2021-11-08
    Icebergs reported in: a. A63, 63-35S 051-38W
  2. HYDROLANT 2751/21 · Icebergs2021-11-07 → 2021-11-08
    Icebergs reported in: a. B09I, 60-18S 33-43W
  3. HYDROLANT 2750/21 · Icebergs2021-11-06 → 2021-11-07
    Icebergs reported in: a. A63, 63-35S 051-38W
  4. HYDROLANT 2749/21 · Icebergs2021-11-06 → 2021-11-07
    Icebergs reported in: a. B09I, 60-21S 33-55W
  5. HYDROLANT 2742/21 · Icebergs2021-11-05 → 2021-11-06
    Icebergs reported in: a. B09I, 60-21S 33-55W
  6. HYDROLANT 2741/21 · Icebergs2021-11-05 → 2021-11-06
    Icebergs reported in: a. A63, 63-35S 051-38W
  7. HYDROLANT 2735/21 · Icebergs2021-11-04 → 2021-11-05
    Icebergs reported in: a. 63-09S 050-42W
  8. HYDROLANT 2734/21 · Icebergs2021-11-04 → 2021-11-05
    Icebergs reported in: a. A63, 63-35S 051-38W
  9. HYDROLANT 2730/21 · Icebergs2021-11-03 → 2021-11-04
    Icebergs reported in: a. A63, 63-35S 051-38W
  10. HYDROLANT 2729/21 · Icebergs2021-11-03 → 2021-11-04
    Icebergs reported in: a. 63-09S 050-46W
  11. HYDROLANT 2724/21 · Icebergs2021-11-02 → 2021-11-03
    Icebergs reported in: a. A63, 63-35S 051-38W
  12. HYDROLANT 2723/21 · Icebergs2021-11-02 → 2021-11-03
    Icebergs reported in: a. 63-10S 050-48W
  13. HYDROLANT 2714/21 · Icebergs2021-11-01 → 2021-11-02
    Icebergs reported in: a. 63-11S 050-41W
  14. HYDROLANT 2712/21 · Icebergs2021-11-01 → 2021-11-02
    Icebergs reported in: a. A63, 63-35S 051-38W
  15. HYDROLANT 2708/21 · Icebergs2021-10-31 → 2021-11-01
    Icebergs reported in: a. A63, 63-38S 051-38W
  16. HYDROLANT 2707/21 · Icebergs2021-10-31 → 2021-11-01
    Icebergs reported in: a. 63-15S 050-38W
  17. HYDROLANT 2687/21 · Icebergs2021-10-30 → 2021-10-31
    Icebergs reported in: a. 63-20S 050-41W
  18. HYDROLANT 2677/21 · Icebergs2021-10-29 → 2021-10-30
    Icebergs reported in: a. A63, 63-38S 051-38W
  19. HYDROLANT 2673/21 · Icebergs2021-10-29 → 2021-10-30
    Icebergs reported in: a. 63-21S 050-52W
  20. HYDROLANT 2654/21 · Icebergs2021-10-28 → 2021-10-29
    Icebergs reported in: a. A63, 63-38S 051-38W

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