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. HYDROLANT 2013/20 · Icebergs2020-06-21 → 2020-06-22
    Icebergs reported in: a. A64, 69-44S 060-57W
  2. HYDROLANT 2009/20 · Icebergs2020-06-20 → 2020-06-21
    Icebergs reported in: a. A64, 69-44S 060-57W
  3. HYDROLANT 1999/20 · Icebergs2020-06-19 → 2020-06-20
    Icebergs reported in: a. A64, 69-44S 060-57W
  4. HYDROLANT 1984/20 · Icebergs2020-06-17 → 2020-06-18
    Icebergs reported in: a. A64, 69-44S 060-57W
  5. HYDROLANT 1969/20 · Icebergs2020-06-16 → 2020-06-17
    Icebergs reported in: a. A64, 69-44S 060-57W
  6. HYDROLANT 1955/20 · Icebergs2020-06-15 → 2020-06-16
    Icebergs reported in: a. A64, 69-44S 060-57W
  7. HYDROLANT 1953/20 · Icebergs2020-06-14 → 2020-06-15
    Icebergs reported in: a. A64, 69-44S 060-57W
  8. HYDROLANT 1948/20 · Icebergs2020-06-13 → 2020-06-14
    Icebergs reported in: a. A64, 69-44S 060-57W
  9. HYDROLANT 1938/20 · Icebergs2020-06-12 → 2020-06-13
    Icebergs reported in: a. A64, 69-44S 060-57W
  10. HYDROLANT 1932/20 · Icebergs2020-06-12 → 2020-06-13
    Icebergs reported in: a. A68A, 59-51S 048-57W
  11. HYDROLANT 1923/20 · Icebergs2020-06-11 → 2020-06-12
    Icebergs reported in: a. A64, 69-44S 060-57W
  12. HYDROLANT 1911/20 · Icebergs2020-06-10 → 2020-06-11
    Icebergs reported in: a. A64, 69-44S 060-57W
  13. HYDROLANT 1902/20 · Icebergs2020-06-09 → 2020-06-10
    Icebergs reported in: a. A64, 69-44S 060-57W
  14. HYDROLANT 1899/20 · Icebergs2020-06-08 → 2020-06-09
    Icebergs reported in: a. A64, 69-44S 060-57W
  15. HYDROLANT 1892/20 · Icebergs2020-06-07 → 2020-06-08
    Icebergs reported in: a. A68A, 59-56S 048-57W
  16. HYDROLANT 1891/20 · Icebergs2020-06-07 → 2020-06-08
    Icebergs reported in: a. A64, 69-44S 060-57W
  17. HYDROLANT 1884/20 · Icebergs2020-06-06 → 2020-06-07
    Icebergs reported in: a. A68A, 60-02S 048-59W
  18. HYDROLANT 1883/20 · Icebergs2020-06-06 → 2020-06-07
    Icebergs reported in: a. A64, 69-44S 060-57W
  19. HYDROLANT 1876/20 · Icebergs2020-06-05 → 2020-06-06
    Icebergs reported in: a. A64, 69-44S 060-57W
  20. HYDROLANT 1875/20 · Icebergs2020-06-05 → 2020-06-06
    Icebergs reported in: a. A68A, 60-03S 049-10W

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