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 2079/18 · Icebergs2018-06-26 → 2018-06-27
    Icebergs reported in: a. A57A, 62-22S 054-54W
  2. HYDROLANT 2067/18 · Icebergs2018-06-25 → 2018-06-26
    Icebergs reported in: a. A57A, 62-22S 054-54W
  3. HYDROLANT 2058/18 · Icebergs2018-06-24 → 2018-06-25
    Icebergs reported in: a. B09F, 61-46S 053-40W
  4. HYDROLANT 2039/18 · Icebergs2018-06-23 → 2018-06-24
    Icebergs reported in: a. B09F, 61-46S 053-40W
  5. HYDROLANT 2030/18 · Icebergs2018-06-22 → 2018-06-23
    Icebergs reported in: a. B09F, 61-46S 053-40W
  6. HYDROLANT 2012/18 · Icebergs2018-06-21 → 2018-06-22
    Icebergs reported in: a. A57A, 62-22S 054-54W
  7. HYDROLANT 1989/18 · Icebergs2018-06-20 → 2018-06-21
    Icebergs reported in: a. B09F, 61-46S 053-40W
  8. HYDROPAC 2257/18 · Icebergs2018-06-18 → 2018-06-19
    Iceberg reported in 63-46S 073-28W
  9. HYDROLANT 1968/18 · Icebergs2018-06-18 → 2018-06-19
    Icebergs reported in: a. B09F, 61-55S 053-51W
  10. HYDROLANT 1967/18 · Icebergs2018-06-18 → 2018-06-19
    Icebergs reported in: a. B15T, 59-36S 036-56W
  11. HYDROLANT 1944/18 · Icebergs2018-06-17 → 2018-06-18
    Icebergs reported in: a. B09F, 61-55S 053-51W
  12. HYDROPAC 2249/18 · Icebergs2018-06-17 → 2018-06-18
    Iceberg B31 reported in 63-46S 073-28W
  13. HYDROLANT 1935/18 · Icebergs2018-06-16 → 2018-06-17
    Icebergs reported in: a. B15T, 58-38S 037-11W
  14. HYDROPAC 2240/18 · Icebergs2018-06-16 → 2018-06-17
    Iceberg B31 reported in 63-46S 073-28W
  15. HYDROLANT 1934/18 · Icebergs2018-06-16 → 2018-06-17
    Icebergs reported in: a. B09F 61-55S 053-51W
  16. HYDROPAC 2220/18 · Icebergs2018-06-15 → 2018-06-16
    Iceberg B31 reported in 63-46S 073-28W
  17. HYDROLANT 1928/18 · Icebergs2018-06-15 → 2018-06-16
    Icebergs reported in: a. B09F 61-55S 053-51W
  18. HYDROPAC 2210/18 · Icebergs2018-06-14 → 2018-06-15
    Iceberg B31 reported in 62-22S 068-50W
  19. HYDROLANT 1908/18 · Icebergs2018-06-14 → 2018-06-15
    Icebergs reported in: a. B09F, 61-51S 054-01W
  20. HYDROPAC 2194/18 · Icebergs2018-06-13 → 2018-06-14
    Iceberg B31 reported in 63-46S 073-28W

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