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 2833/21 · Icebergs2021-11-17 → 2021-11-18
    Icebergs reported in: a. B09I, 59-54S 033-04W
  2. HYDROLANT 2829/21 · Icebergs2021-11-16 → 2021-11-17
    Icebergs reported in: a. B09I, 59-53S 033-16W
  3. HYDROLANT 2826/21 · Icebergs2021-11-16 → 2021-11-17
    Icebergs reported in: a. A63, 63-11S 050-58W
  4. HYDROLANT 2816/21 · Icebergs2021-11-15 → 2021-11-16
    Icebergs reported in: a. A63, 63-11S 050-58W
  5. HYDROLANT 2815/21 · Icebergs2021-11-15 → 2021-11-16
    Icebergs reported in: a. B09I, 59-53S 033-16W
  6. HYDROLANT 2807/21 · Icebergs2021-11-14 → 2021-11-15
    Icebergs reported in: a. 62-54S 050-39W
  7. HYDROLANT 2806/21 · Icebergs2021-11-14 → 2021-11-15
    Icebergs reported in: a. A63 63-11S 050-58W
  8. HYDROLANT 2801/21 · Icebergs2021-11-13 → 2021-11-14
    Icebergs reported in: a. 63-01S 050-48W
  9. HYDROLANT 2800/21 · Icebergs2021-11-13 → 2021-11-14
    Icebergs reported in: a. A63, 63-20S 050-28W
  10. HYDROLANT 2797/21 · Icebergs2021-11-12 → 2021-11-13
    Icebergs reported in: a. A63, 63-20S 050-28W
  11. HYDROLANT 2796/21 · Icebergs2021-11-12 → 2021-11-13
    Icebergs reported in: a. 63-01S 050-48W
  12. HYDROLANT 2789/21 · Icebergs2021-11-11 → 2021-11-12
    Icebergs reported in: a. A63 63-20S 050-28W
  13. HYDROLANT 2788/21 · Icebergs2021-11-11 → 2021-11-12
    Icebergs reported in: a. 63-02S 050-49W
  14. HYDROLANT 2785/21 · Nav aids2021-11-11 → 2022-03-21
    RACON at islote montravel light 63-08.6S 058-02.4W inoperative
  15. HYDROLANT 2777/21 · Icebergs2021-11-10 → 2021-11-11
    Icebergs reported in: a. A63 63-20S 050-28W
  16. HYDROLANT 2776/21 · Icebergs2021-11-10 → 2021-11-11
    Icebergs reported in: a. 63-03S 050-50W
  17. HYDROLANT 2768/21 · Icebergs2021-11-09 → 2021-11-10
    Icebergs reported in: a. A63 63-20S 050-28W
  18. HYDROLANT 2767/21 · Icebergs2021-11-09 → 2021-11-10
    Icebergs reported in: a. 63-03S 050-48W
  19. HYDROLANT 2758/21 · Icebergs2021-11-08 → 2021-11-09
    Icebergs reported in: a. A63, 63-20S 050-28W
  20. HYDROLANT 2757/21 · Icebergs2021-11-08 → 2021-11-09
    Icebergs reported in: a. 63-05S 050-44W

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