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. HYDROPAC 193/21 · Icebergs2021-01-15 → 2021-01-16
    Icebergs reported in: a. A64, 60-59S 069-44W
  2. HYDROPAC 180/21 · Icebergs2021-01-14 → 2021-01-15
    Icebergs reported in: a. A64, 60-59S 069-44W
  3. HYDROPAC 169/21 · Icebergs2021-01-13 → 2021-01-14
    Icebergs reported in: a. A64, 60-59S 069-44W
  4. HYDROPAC 154/21 · Icebergs2021-01-12 → 2021-01-13
    Icebergs reported in: a. A64, 60-59S 069-44W
  5. HYDROPAC 133/21 · Icebergs2021-01-11 → 2021-01-12
    Icebergs reported in: a. A64, 60-59S 069-44W
  6. HYDROLANT 98/21 · Wrecks2021-01-11 → 2021-02-24
    8.45 meter depth reported in 65-16.92S 064-22.96W
  7. HYDROPAC 113/21 · Icebergs2021-01-10 → 2021-01-11
    Icebergs reported in: a. A64, 60-59S 069-44W
  8. HYDROPAC 100/21 · Icebergs2021-01-09 → 2021-01-10
    Icebergs reported in: a. A64, 60-59S 069-44W
  9. HYDROLANT 64/21 · Icebergs2021-01-08 → 2021-01-09
    Icebergs reported in: a. A63, 71-47S 053-21W
  10. HYDROLANT 48/21 · Icebergs2021-01-07 → 2021-01-08
    Icebergs reported in: a. A63, 71-47S 053-21W
  11. HYDROLANT 38/21 · Icebergs2021-01-06 → 2021-01-07
    Icebergs reported in: a. A63, 71-47S 053-21W
  12. HYDROLANT 28/21 · Icebergs2021-01-05 → 2021-01-06
    Icebergs reported in: a. A63, 71-47S 053-21W
  13. HYDROLANT 12/21 · Icebergs2021-01-03 → 2021-01-04
    Icebergs reported in: a. A63, 71-47S 053-21W
  14. HYDROLANT 9/21 · Icebergs2021-01-02 → 2021-01-03
    Icebergs reported in: a. A63, 71-45S 052-58W
  15. HYDROLANT 4/21 · Icebergs2021-01-01 → 2021-01-02
    Icebergs reported in: a. A63, 71-45S 052-58W
  16. HYDROLANT 4012/20 · Icebergs2020-12-31 → 2021-01-01
    Icebergs reported in: a. A63, 71-45S 052-58W
  17. HYDROLANT 4005/20 · Icebergs2020-12-30 → 2020-12-31
    Icebergs reported in: a. A63, 71-45S 052-58W
  18. HYDROLANT 3996/20 · Icebergs2020-12-29 → 2020-12-30
    Icebergs reported in: a. A63, 71-45S 052-58W
  19. HYDROLANT 3990/20 · Icebergs2020-12-28 → 2020-12-29
    Icebergs reported in: a. A63, 71-45S 052-58W
  20. HYDROLANT 3986/20 · Icebergs2020-12-27 → 2020-12-28
    Icebergs reported in: a. A63, 71-45S 052-58W

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