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 1050/23 · Icebergs2023-05-12 → 2023-05-13
    Icebergs reported in: a. A23A, 71-21.00S 052-46.20W
  2. HYDROLANT 1042/23 · Icebergs2023-05-11 → 2023-05-12
    Icebergs reported in: a. A23A, 71-21.00S 052-46.20W
  3. HYDROLANT 1030/23 · Icebergs2023-05-10 → 2023-05-11
    Icebergs reported in: a. A23A, 71-21.00S 052-46.20W
  4. HYDROLANT 1018/23 · Icebergs2023-05-09 → 2023-05-10
    Icebergs reported in: a. A23A, 71-21.00S 052-46.20W
  5. HYDROLANT 1004/23 · Icebergs2023-05-08 → 2023-05-09
    Icebergs reported in: a. A23A, 71-21.00S 052-46.20W
  6. HYDROLANT 990/23 · Icebergs2023-05-07 → 2023-05-08
    Icebergs reported in: a. A23A, 71-21.00S 052-46.20W
  7. HYDROLANT 985/23 · Icebergs2023-05-06 → 2023-05-07
    Icebergs reported in: a. A23A, 71-32.40S 052-01.20W
  8. HYDROLANT 976/23 · Icebergs2023-05-05 → 2023-05-06
    Icebergs reported in: a. A23A, 71-32.40S 052-01.20W
  9. HYDROLANT 966/23 · Icebergs2023-05-04 → 2023-05-05
    Icebergs reported in: a. A23A, 71-32.40S 052-01.20W
  10. HYDROLANT 951/23 · Icebergs2023-05-03 → 2023-05-04
    Icebergs reported in: a. A23A, 71-32.40S 052-01.20W
  11. HYDROLANT 939/23 · Icebergs2023-05-02 → 2023-05-03
    Icebergs reported in: a. A23A, 71-32.40S 052-01.20W
  12. HYDROLANT 935/23 · Icebergs2023-05-01 → 2023-05-02
    Icebergs reported in: a. A23A, 71-32.40S 052-01.20W
  13. HYDROLANT 929/23 · Icebergs2023-04-30 → 2023-05-01
    Icebergs reported in: a. A23A, 71-32.40S 052-01.20W
  14. HYDROLANT 922/23 · Icebergs2023-04-29 → 2023-04-30
    Icebergs reported in: a. A23A, 71-40.80S 051-54.00W
  15. HYDROLANT 909/23 · Icebergs2023-04-28 → 2023-04-29
    Icebergs reported in: a. A23A, 71-40.80S 051-54.00W
  16. HYDROLANT 901/23 · Icebergs2023-04-27 → 2023-04-28
    Icebergs reported in: a. A23A, 71-40.80S 051-54.00W
  17. HYDROLANT 896/23 · Icebergs2023-04-26 → 2023-04-27
    Icebergs reported in: a. A23A, 71-40.80S 051-54.00W
  18. HYDROLANT 887/23 · Icebergs2023-04-25 → 2023-04-26
    Icebergs reported in: a. A23A, 71-40.80S 051-54.00W
  19. HYDROLANT 883/23 · Icebergs2023-04-24 → 2023-04-25
    Icebergs reported in: a. A23A, 71-40.80S 051-54.00W
  20. HYDROLANT 874/23 · Icebergs2023-04-23 → 2023-04-24
    Icebergs reported in: a. A23A, 71-45.60S 051-19.20W

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