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 1927/21 · Icebergs2021-07-23 → 2021-07-24
    Icebergs reported in: a. A63, 66-52S 056-44W
  2. HYDROLANT 1919/21 · Icebergs2021-07-22 → 2021-07-23
    Icebergs reported in: a. A63, 66-52S 056-44W
  3. HYDROLANT 1911/21 · Icebergs2021-07-21 → 2021-07-22
    Icebergs reported in: a. A63, 66-52S 056-44W
  4. HYDROLANT 1904/21 · Icebergs2021-07-20 → 2021-07-21
    Icebergs reported in: a. A63, 66-52S 056-44W
  5. HYDROLANT 1890/21 · Icebergs2021-07-19 → 2021-07-20
    Icebergs reported in: a. A63, 66-52S 056-44W
  6. HYDROLANT 1880/21 · Icebergs2021-07-18 → 2021-07-19
    Icebergs reported in: a. A63, 66-52S 056-44W
  7. HYDROLANT 1876/21 · Icebergs2021-07-17 → 2021-07-18
    Icebergs reported in: a. A63, 66-07S 056-32W
  8. HYDROLANT 1872/21 · Icebergs2021-07-16 → 2021-07-17
    Icebergs reported in: a. A63, 66-07S 056-32W
  9. HYDROLANT 1866/21 · Icebergs2021-07-15 → 2021-07-16
    Icebergs reported in: a. A63, 66-07S 056-32W
  10. HYDROLANT 1859/21 · Icebergs2021-07-14 → 2021-07-15
    Icebergs reported in: a. A63, 66-07S 056-32W
  11. HYDROLANT 1849/21 · Icebergs2021-07-13 → 2021-07-14
    Icebergs reported in: a. A63, 66-07S 056-32W
  12. HYDROLANT 1832/21 · Icebergs2021-07-12 → 2021-07-13
    Icebergs reported in: a. A63, 66-20S 056-47W
  13. HYDROLANT 1825/21 · Icebergs2021-07-11 → 2021-07-12
    Icebergs reported in: a. A63, 66-20S 056-47W
  14. HYDROLANT 1819/21 · Icebergs2021-07-10 → 2021-07-11
    Icebergs reported in: a. A63, 66-20S 056-47W
  15. HYDROLANT 1808/21 · Icebergs2021-07-09 → 2021-07-10
    Icebergs reported in: a. A63, 66-20S 056-47W
  16. HYDROLANT 1803/21 · Icebergs2021-07-08 → 2021-07-09
    Icebergs reported in: a. A63, 66-20S 056-47W
  17. HYDROLANT 1790/21 · Icebergs2021-07-07 → 2021-07-08
    Icebergs reported in: a. A63, 66-20S 056-47W
  18. HYDROLANT 1779/21 · Icebergs2021-07-06 → 2021-07-07
    Icebergs reported in: a. A63, 66-20S 056-47W
  19. HYDROLANT 1766/21 · Icebergs2021-07-05 → 2021-07-06
    Icebergs reported in: a. A63, 66-20S 056-47W
  20. HYDROLANT 1756/21 · Icebergs2021-07-04 → 2021-07-05
    Icebergs reported in: a. A63, 66-20S 056-47W

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