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 2472/21 · Icebergs2021-10-05 → 2021-10-06
    Icebergs reported in: a. A63, 64-12S 054-27W
  2. HYDROLANT 2466/21 · Icebergs2021-10-04 → 2021-10-05
    Icebergs reported in: a. A63, 64-12S 054-27W
  3. HYDROLANT 2458/21 · Icebergs2021-10-03 → 2021-10-04
    Icebergs reported in: a. A63, 64-12S 054-27W
  4. HYDROLANT 2454/21 · Icebergs2021-10-02 → 2021-10-03
    Icebergs reported in: a. A63, 64-12S 054-27W
  5. HYDROLANT 2447/21 · Icebergs2021-10-01 → 2021-10-02
    Icebergs reported in: a. 60-22S 047-32W
  6. HYDROLANT 2446/21 · Icebergs2021-10-01 → 2021-10-02
    Icebergs reported in: a. A63, 64-12S 054-27W
  7. HYDROLANT 2443/21 · Icebergs2021-10-01 → 2021-10-02
    Icebergs reported in: a. 60-22S 047-32W
  8. HYDROLANT 2442/21 · Icebergs2021-10-01 → 2021-10-02
    Icebergs reported in: a. A63, 64-12S 054-27W
  9. HYDROLANT 2435/21 · Icebergs2021-09-29 → 2021-09-30
    Icebergs reported in: a. 60-22S 047-32W
  10. HYDROLANT 2434/21 · Icebergs2021-09-29 → 2021-09-30
    Icebergs reported in: a. A63, 64-12S 054-27W
  11. HYDROLANT 2433/21 · Icebergs2021-09-29 → 2021-09-30
    Icebergs reported in: a. 60-22S 047-32W
  12. HYDROLANT 2426/21 · Icebergs2021-09-28 → 2021-09-29
    Icebergs reported in: a. A63, 64-12S 054-27W
  13. HYDROLANT 2425/21 · Icebergs2021-09-28 → 2021-09-29
    Icebergs reported in: a. 60-22S 047-32W
  14. HYDROLANT 2420/21 · Icebergs2021-09-27 → 2021-09-28
    Icebergs reported in: a. A63, 64-12S 054-27W
  15. HYDROLANT 2419/21 · Icebergs2021-09-27 → 2021-09-28
    Icebergs reported in: a. 60-22S 047-32W
  16. HYDROLANT 2408/21 · Icebergs2021-09-26 → 2021-09-27
    Icebergs reported in: a. A63, 64-12S 054-27W
  17. HYDROLANT 2407/21 · Icebergs2021-09-26 → 2021-09-27
    Icebergs reported in: a. 60-23S 047-32W
  18. HYDROLANT 2401/21 · Icebergs2021-09-25 → 2021-09-26
    Icebergs reported in: a. 60-23S 047-32W
  19. HYDROLANT 2400/21 · Icebergs2021-09-25 → 2021-09-26
    Icebergs reported in: a. A63, 64-12S 054-31W
  20. HYDROLANT 2396/21 · Icebergs2021-09-24 → 2021-09-25
    Icebergs reported in: a. A63, 64-12S 054-31W

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