Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
3
since 1999
3,131
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

Icebergs2,99095%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,128 cancelled

  1. HYDROLANT 3234/22 · Icebergs2022-12-18 → 2022-12-19
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  2. HYDROLANT 3231/22 · Icebergs2022-12-17 → 2022-12-18
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  3. HYDROLANT 3224/22 · Icebergs2022-12-16 → 2022-12-17
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  4. HYDROLANT 3215/22 · Icebergs2022-12-15 → 2022-12-16
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  5. HYDROLANT 3204/22 · Icebergs2022-12-14 → 2022-12-15
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  6. HYDROLANT 3198/22 · Icebergs2022-12-13 → 2022-12-14
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  7. HYDROLANT 3185/22 · Icebergs2022-12-12 → 2022-12-13
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  8. HYDROLANT 3182/22 · Icebergs2022-12-11 → 2022-12-12
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  9. HYDROLANT 3177/22 · Icebergs2022-12-10 → 2022-12-11
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  10. HYDROLANT 3167/22 · Icebergs2022-12-09 → 2022-12-10
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  11. HYDROLANT 3156/22 · Icebergs2022-12-08 → 2022-12-09
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  12. HYDROLANT 3143/22 · Icebergs2022-12-07 → 2022-12-08
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  13. HYDROLANT 3135/22 · Icebergs2022-12-06 → 2022-12-07
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  14. HYDROLANT 3121/22 · Icebergs2022-12-05 → 2022-12-06
    Icebergs reported in: a. A64, 60-31.80S 049-33.60W
  15. HYDROLANT 3107/22 · Icebergs2022-12-04 → 2022-12-05
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  16. HYDROLANT 3103/22 · Icebergs2022-12-03 → 2022-12-04
    Icebergs reported in a. A76A, 59-08.00S 049-24.00W
  17. HYDROLANT 3102/22 · Icebergs2022-12-03 → 2022-12-04
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W
  18. HYDROPAC 3446/22 · Missiles2022-12-03 → 2022-12-07
    Hazardous operations, space debris 070001Z to 070700Z dec in area bound by 69-04.02S 074-14.52W, 67-12.84S…
  19. HYDROLANT 3098/22 · Icebergs2022-12-02 → 2022-12-03
    Icebergs reported in: a. A76A, 59-05.00S 049-21.00W
  20. HYDROLANT 3097/22 · Icebergs2022-12-02 → 2022-12-03
    Icebergs reported in: a. A64, 61-46.80S 052-09.00W

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