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 1870/20 · Icebergs2020-06-04 → 2020-06-05
    Icebergs reported in: a. A68A, 60-06S 049-10W
  2. HYDROLANT 1869/20 · Icebergs2020-06-04 → 2020-06-05
    Icebergs reported in: a. A64, 69-44S 060-57W
  3. HYDROLANT 1861/20 · Icebergs2020-06-03 → 2020-06-04
    Icebergs reported in: a. A68A, 60-06S 049-09W
  4. HYDROLANT 1858/20 · Icebergs2020-06-02 → 2020-06-03
    Icebergs reported in: a. A68A, 60-09S 049-17W
  5. HYDROLANT 1843/20 · Icebergs2020-06-01 → 2020-06-02
    Icebergs reported in: a. A64, 69-44S 060-57W
  6. HYDROLANT 1836/20 · Icebergs2020-06-01 → 2020-06-02
    Icebergs reported in: a. A68A, 60-11S 049-15W
  7. HYDROLANT 1825/20 · Icebergs2020-05-31 → 2020-06-01
    Icebergs reported in: a. A64, 69-44S 060-57W
  8. HYDROLANT 1824/20 · Icebergs2020-05-31 → 2020-06-01
    Icebergs reported in: a. A68A, 60-10S 049-12W
  9. HYDROLANT 1820/20 · Icebergs2020-05-30 → 2020-05-31
    Icebergs reported in: a. A64, 69-44S 060-57W
  10. HYDROLANT 1818/20 · Icebergs2020-05-30 → 2020-05-31
    Icebergs reported in: a. A68A, 60-11S 049-17W
  11. HYDROLANT 1813/20 · Icebergs2020-05-29 → 2020-05-30
    Icebergs reported in: a. A68A, 60-16S 049-14W
  12. HYDROLANT 1811/20 · Icebergs2020-05-29 → 2020-05-30
    Icebergs reported in: a. A64, 69-44S 060-57W
  13. HYDROLANT 1800/20 · Icebergs2020-05-28 → 2020-05-29
    Icebergs reported in: a. A68A, 60-16S 049-29W
  14. HYDROLANT 1798/20 · Icebergs2020-05-28 → 2020-05-29
    Icebergs reported in: a. A64, 69-44S 060-57W
  15. HYDROLANT 1789/20 · Icebergs2020-05-27 → 2020-05-28
    Icebergs reported in: a. A68A, 60-13S 049-22W
  16. HYDROLANT 1781/20 · Icebergs2020-05-26 → 2020-05-27
    Icebergs reported in: a. A64, 69-44S 060-57W
  17. HYDROLANT 1780/20 · Icebergs2020-05-26 → 2020-05-27
    Icebergs reported in: a. A68A, 60-16S 049-31W
  18. HYDROLANT 1762/20 · Icebergs2020-05-25 → 2020-05-26
    Icebergs reported in: a. A64, 69-44S 060-57W
  19. HYDROLANT 1761/20 · Icebergs2020-05-25 → 2020-05-26
    Icebergs reported in: a. A68A, 60-15S 049-22W
  20. HYDROLANT 1752/20 · Icebergs2020-05-24 → 2020-05-25
    Icebergs reported in: a. A64, 69-44S 060-57W

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