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 2095/21 · Icebergs2021-08-12 → 2021-08-13
    Icebergs reported in: a. A63, 65-10S 056-11W
  2. HYDROLANT 2092/21 · Icebergs2021-08-11 → 2021-08-12
    Icebergs reported in: a. A63, 65-10S 056-11W
  3. HYDROLANT 2080/21 · Icebergs2021-08-10 → 2021-08-11
    Icebergs reported in: a. A63, 65-10S 056-11W
  4. HYDROLANT 2073/21 · Icebergs2021-08-09 → 2021-08-10
    Icebergs reported in: a. A63, 65-10S 056-11W
  5. HYDROLANT 2063/21 · Icebergs2021-08-08 → 2021-08-09
    Icebergs reported in: a. A63, 65-10S 056-11W
  6. HYDROLANT 2061/21 · Icebergs2021-08-07 → 2021-08-08
    Icebergs reported in: a. A63, 65-21S 056-29W
  7. HYDROLANT 2055/21 · Icebergs2021-08-06 → 2021-08-07
    Icebergs reported in: a. A63, 65-21S 056-29W
  8. HYDROLANT 2041/21 · Icebergs2021-08-05 → 2021-08-06
    Icebergs reported in: a. A63, 65-21S 056-29W
  9. HYDROLANT 2033/21 · Icebergs2021-08-04 → 2021-08-05
    Icebergs reported in: a. A63, 65-21S 056-29W
  10. HYDROLANT 2022/21 · Icebergs2021-08-03 → 2021-08-04
    Icebergs reported in: a. A63, 65-21S 056-29W
  11. HYDROLANT 2010/21 · Icebergs2021-08-02 → 2021-08-03
    Icebergs reported in: a. A63, 65-21S 056-29W
  12. HYDROLANT 2000/21 · Icebergs2021-08-01 → 2021-08-02
    Icebergs reported in: a. A63, 65-21S 056-29W
  13. HYDROLANT 1995/21 · Icebergs2021-07-31 → 2021-08-01
    Icebergs reported in: a. A63, 65-22S 056-34W
  14. HYDROLANT 1988/21 · Icebergs2021-07-30 → 2021-07-31
    Icebergs reported in: a. A63, 65-22S 056-34W
  15. HYDROLANT 1976/21 · Icebergs2021-07-29 → 2021-07-30
    Icebergs reported in: a. A63, 65-22S 056-34W
  16. HYDROLANT 1968/21 · Icebergs2021-07-28 → 2021-07-29
    Icebergs reported in: a. A63, 65-22S 056-34W
  17. HYDROLANT 1959/21 · Icebergs2021-07-27 → 2021-07-28
    Icebergs reported in: a. A63, 66-22S 056-34W
  18. HYDROLANT 1949/21 · Icebergs2021-07-26 → 2021-07-27
    Icebergs reported in: a. A63, 66-22S 056-34W
  19. HYDROLANT 1944/21 · Icebergs2021-07-25 → 2021-07-26
    Icebergs reported in: a. A63, 66-52S 056-44W
  20. HYDROLANT 1934/21 · Icebergs2021-07-24 → 2021-07-25
    Icebergs reported in: a. A63, 66-52S 056-44W

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