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 2159/22 · Icebergs2022-08-31 → 2022-09-01
    Icebergs reported in: a. A76A , 61-28.00S 052-25.00W
  2. HYDROLANT 2150/22 · Icebergs2022-08-30 → 2022-08-31
    Icebergs reported in: a. A76A, 61-52.00S 053-09.00W
  3. HYDROLANT 2149/22 · Icebergs2022-08-30 → 2022-08-31
    Icebergs reported in a. 65-16.80S 058-15.00W
  4. HYDROLANT 2142/22 · Icebergs2022-08-30 → 2022-08-31
    Iceberg reported in vicinity 61-00.00S 056-16.00W
  5. HYDROLANT 2137/22 · Icebergs2022-08-29 → 2022-08-30
    Icebergs reported in: a. A76A, 61-27.00S 052-29.00W
  6. HYDROLANT 2136/22 · Icebergs2022-08-29 → 2022-08-30
    Icebergs reported in a. A64, 65-16.80S 058-15.00W
  7. HYDROLANT 2130/22 · Icebergs2022-08-28 → 2022-08-29
    Icebergs reported in a. A64, 65-16.80S 058-15.00W
  8. HYDROLANT 2129/22 · Icebergs2022-08-28 → 2022-08-29
    Icebergs reported in: a. A76A, 61-29.00S 052-27.00W
  9. HYDROLANT 2121/22 · Icebergs2022-08-27 → 2022-08-28
    Icebergs reported in: a. A76A, 61-41.00S 052-22.00W
  10. HYDROLANT 2120/22 · Icebergs2022-08-27 → 2022-08-28
    Icebergs reported in a. A64, 65-16.80S 058-15.00W
  11. HYDROLANT 2113/22 · Icebergs2022-08-26 → 2022-08-27
    Icebergs reported in a. A64, 65-16.80S 058-15.00W
  12. HYDROLANT 2112/22 · Icebergs2022-08-26 → 2022-08-27
    Icebergs reported in: a. A76A, 61-30.00S 052-30.00W
  13. HYDROLANT 2101/22 · Icebergs2022-08-25 → 2022-08-26
    Icebergs reported in a. A64, 65-16.80S 058-15.00W
  14. HYDROLANT 2100/22 · Icebergs2022-08-25 → 2022-08-26
    Icebergs reported in: a. A76A, 61-33.00S 052-31.00W
  15. HYDROLANT 2097/22 · Icebergs2022-08-25 → 2022-08-26
    Iceberg reported in 61-40.00S 057-53.00W
  16. HYDROLANT 2094/22 · Icebergs2022-08-24 → 2022-08-25
    Icebergs reported in a. A64, 65-16.80S 058-15.00W
  17. HYDROLANT 2093/22 · Icebergs2022-08-24 → 2022-08-25
    Icebergs reported in: a. A76A, 61-30.00S 052-27.00W
  18. HYDROLANT 2086/22 · Icebergs2022-08-23 → 2022-08-24
    Icebergs reported in: a. A64, 65-16.80S 058-15.00W
  19. HYDROLANT 2085/22 · Icebergs2022-08-23 → 2022-08-24
    Icebergs reported in: a. A76A, 61-38.00S 052-40.00W
  20. HYDROLANT 2081/22 · Icebergs2022-08-22 → 2022-08-23
    Icebergs reported in: a. A64, 65-16.80S 058-15.00W

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