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 2427/23 · Icebergs2023-10-24 → 2023-10-25
    Icebergs reported in: a. A23A, 64-00.00S 052-45.00W
  2. HYDROLANT 2420/23 · Icebergs2023-10-23 → 2023-10-24
    Icebergs reported in: a. A23A, 64-00.00S 052-45.00W
  3. HYDROLANT 2411/23 · Icebergs2023-10-22 → 2023-10-23
    Icebergs reported in: a. A23A, 64-00.00S 052-45.00W
  4. HYDROLANT 2394/23 · Icebergs2023-10-21 → 2023-10-22
    Icebergs reported in: a. A23A, 64-00.00S 052-45.00W
  5. HYDROLANT 2385/23 · Icebergs2023-10-20 → 2023-10-21
    Icebergs reported in: a. A23A, 64-00.00S 052-45.00W
  6. HYDROLANT 2372/23 · Icebergs2023-10-19 → 2023-10-20
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  7. HYDROLANT 2367/23 · Icebergs2023-10-18 → 2023-10-19
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  8. HYDROLANT 2357/23 · Icebergs2023-10-17 → 2023-10-18
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  9. HYDROLANT 2345/23 · Icebergs2023-10-16 → 2023-10-17
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  10. HYDROLANT 2335/23 · Icebergs2023-10-15 → 2023-10-16
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  11. HYDROLANT 2333/23 · Icebergs2023-10-14 → 2023-10-15
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  12. HYDROLANT 2322/23 · Icebergs2023-10-13 → 2023-10-14
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  13. HYDROLANT 2314/23 · Icebergs2023-10-12 → 2023-10-13
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  14. HYDROLANT 2309/23 · Icebergs2023-10-11 → 2023-10-12
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  15. HYDROLANT 2298/23 · Icebergs2023-10-10 → 2023-10-11
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  16. HYDROLANT 2286/23 · Icebergs2023-10-09 → 2023-10-10
    Icebergs reported in: a. A23A, 64-04.20S 053-06.60W
  17. HYDROLANT 2240/23 · Icebergs2023-10-03 → 2023-10-04
    Icebergs reported in: a. A23A, 64-38.40S 053-57.60W
  18. HYDROLANT 2224/23 · Icebergs2023-10-01 → 2023-10-02
    Iceberg reported in: a. A23A, 64-38.40S 053-57.60W
  19. HYDROLANT 2212/23 · Icebergs2023-09-30 → 2023-10-01
    Iceberg reported in: a. A23A, 64-38.40S 053-57.60W
  20. HYDROLANT 2203/23 · Icebergs2023-09-29 → 2023-09-30
    Icebergs reported in: a. A23A, 64-38.40S 053-57.60W

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