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 2254/21 · Icebergs2021-09-02 → 2021-09-03
    Icebergs reported in: a. A63, 64-09S 055-12W
  2. HYDROLANT 2247/21 · Icebergs2021-09-01 → 2021-09-02
    Icebergs reported in: a. A63, 64-09S 055-12W
  3. HYDROLANT 2238/21 · Icebergs2021-08-31 → 2021-09-01
    Icebergs reported in: a. A63, 64-09S 055-12W
  4. HYDROLANT 2232/21 · Icebergs2021-08-30 → 2021-08-31
    Icebergs reported in: a. A63, 64-09S 055-12W
  5. HYDROLANT 2217/21 · Icebergs2021-08-29 → 2021-08-30
    Icebergs reported in: a. A63, 64-09S 055-12W
  6. HYDROLANT 2210/21 · Icebergs2021-08-28 → 2021-08-29
    Icebergs reported in: a. A63, 64-09S 055-12W
  7. HYDROLANT 2204/21 · Icebergs2021-08-27 → 2021-08-28
    Icebergs reported in: a. A63, 64-11S 055-16W
  8. HYDROLANT 2198/21 · Icebergs2021-08-26 → 2021-08-27
    Icebergs reported in: a. A63, 64-11S 055-16W
  9. HYDROLANT 2189/21 · Icebergs2021-08-25 → 2021-08-26
    Icebergs reported in: a. A63, 64-11S 055-16W
  10. HYDROLANT 2181/21 · Icebergs2021-08-24 → 2021-08-25
    Icebergs reported in: a. A63, 64-11S 055-16W
  11. HYDROLANT 2171/21 · Icebergs2021-08-23 → 2021-08-24
    Icebergs reported in: a. A63, 64-11S 055-16W
  12. HYDROLANT 2162/21 · Icebergs2021-08-22 → 2021-08-23
    Icebergs reported in: a. A63, 64-11S 055-16W
  13. HYDROLANT 2152/21 · Icebergs2021-08-20 → 2021-08-21
    Icebergs reported in: a. A63, 65-21S 055-30W
  14. HYDROLANT 2139/21 · Icebergs2021-08-19 → 2021-08-20
    Icebergs reported in: a. A63, 65-21S 055-30W
  15. HYDROLANT 2131/21 · Icebergs2021-08-18 → 2021-08-19
    Icebergs reported in: a. A63, 65-21S 055-30W
  16. HYDROLANT 2122/21 · Icebergs2021-08-17 → 2021-08-18
    Icebergs reported in: a. A63, 65-21S 055-30W
  17. HYDROLANT 2116/21 · Icebergs2021-08-16 → 2021-08-17
    Icebergs reported in: a. A63, 65-21S 055-30W
  18. HYDROLANT 2108/21 · Icebergs2021-08-15 → 2021-08-16
    Icebergs reported in: a. A63, 65-21S 055-30W
  19. HYDROLANT 2105/21 · Icebergs2021-08-14 → 2021-08-15
    Icebergs reported in: a. A63, 65-10S 056-11W
  20. HYDROLANT 2102/21 · Icebergs2021-08-13 → 2021-08-14
    Icebergs reported in: a. A63, 65-10S 056-11W

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