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 1203/23 · Icebergs2023-05-30 → 2023-05-31
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  2. HYDROLANT 1199/23 · Icebergs2023-05-30 → 2023-06-02
    Iceberg reported in vicinity 62-11.50S 054-09.10W
  3. HYDROLANT 1195/23 · Icebergs2023-05-29 → 2023-05-30
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  4. HYDROLANT 1193/23 · Icebergs2023-05-28 → 2023-05-29
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  5. HYDROLANT 1188/23 · Icebergs2023-05-27 → 2023-05-28
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  6. HYDROLANT 1178/23 · Icebergs2023-05-26 → 2023-05-26
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  7. HYDROLANT 1159/23 · Icebergs2023-05-25 → 2023-05-26
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  8. HYDROLANT 1151/23 · Icebergs2023-05-25 → 2023-05-28
    Iceberg reported in vicinity 62-17.00S 054-43.00W
  9. HYDROLANT 1146/23 · Icebergs2023-05-24 → 2023-05-25
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  10. HYDROLANT 1134/23 · Icebergs2023-05-23 → 2023-05-24
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  11. HYDROLANT 1123/23 · Icebergs2023-05-22 → 2023-05-23
    Icebergs reported in: a. A23A,71-01.20S 054-07.80W
  12. HYDROLANT 1115/23 · Icebergs2023-05-21 → 2023-05-22
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  13. HYDROLANT 1111/23 · Icebergs2023-05-20 → 2023-05-21
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  14. HYDROLANT 1105/23 · Icebergs2023-05-19 → 2023-05-20
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  15. HYDROLANT 1096/23 · Icebergs2023-05-18 → 2023-05-19
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  16. HYDROLANT 1085/23 · Icebergs2023-05-17 → 2023-05-18
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  17. HYDROLANT 1081/23 · Icebergs2023-05-16 → 2023-05-17
    Icebergs reported in: a. 71-01.20S 054-07.80W
  18. HYDROLANT 1070/23 · Icebergs2023-05-15 → 2023-05-16
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  19. HYDROLANT 1060/23 · Icebergs2023-05-14 → 2023-05-15
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  20. HYDROLANT 1055/23 · Icebergs2023-05-13 → 2023-05-14
    Icebergs reported in: a. A23A, 71-21.00S 052-46.20W

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