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 1920/22 · Icebergs2022-08-03 → 2022-08-04
    Iceberg reported in 62-34.00S 057-51.00W
  2. HYDROLANT 1914/22 · Icebergs2022-08-03 → 2022-08-04
    Iceberg reported in 62-33.00S 057-50.00W
  3. HYDROLANT 1912/22 · Icebergs2022-08-02 → 2022-08-03
    Icebergs reported in: a. A64, 65-27.00S 058-58.80W
  4. HYDROLANT 1904/22 · Icebergs2022-08-01 → 2022-08-02
    Icebergs reported in: a. 65-26.40S 058-42.60W
  5. HYDROPAC 2096/22 · Icebergs2022-08-01 → 2022-08-01
    Icebergs reported in: a. 65-26.40S 058-42.60E
  6. HYDROLANT 1903/22 · Icebergs2022-08-01 → 2022-08-02
    Iceberg reported in 62-34.00S 057-52.00W
  7. HYDROLANT 1900/22 · Icebergs2022-07-31 → 2022-08-01
    Icebergs reported in 62-34.00S 057-52.00W
  8. HYDROLANT 1899/22 · Icebergs2022-07-31 → 2022-08-01
    Icebergs reported in: a. A64, 65-27.00S 058-58.80W
  9. HYDROLANT 1895/22 · Icebergs2022-07-30 → 2022-07-31
    Iceberg reported in 62-34.00S 057-52.00W
  10. HYDROLANT 1894/22 · Icebergs2022-07-30 → 2022-07-31
    Icebergs reported in: a. A64, 65-27.00S 058-58.80W
  11. HYDROLANT 1889/22 · Icebergs2022-07-29 → 2022-07-30
    Icebergs reported in: a. A64, 65-27.00S 058-58.80W
  12. HYDROLANT 1888/22 · Icebergs2022-07-29 → 2022-07-30
    Iceberg reported in 62-34.00S 057-52.00W
  13. HYDROLANT 1876/22 · Icebergs2022-07-28 → 2022-07-29
    Iceberg reported in 62-36.00S 057-53.00W
  14. HYDROLANT 1875/22 · Icebergs2022-07-28 → 2022-07-29
    Icebergs reported in: a. A64, 65-27.00S 058-58.80W
  15. HYDROLANT 1865/22 · Icebergs2022-07-27 → 2022-07-28
    Icebergs reported in: a. A64, 65-27.00S 058-58.80W
  16. HYDROLANT 1857/22 · Icebergs2022-07-26 → 2022-07-27
    Icebergs reported in: a. A64, 65-27.00S 058-58.80W
  17. HYDROLANT 1851/22 · Icebergs2022-07-25 → 2022-07-26
    Icebergs reported in: a. A64, 65-31.20S 059-28.80W
  18. HYDROLANT 1845/22 · Icebergs2022-07-24 → 2022-07-25
    Icebergs reported in: a. A64, 65-31.20S 059-28.80W
  19. HYDROLANT 1840/22 · Icebergs2022-07-23 → 2022-07-24
    Icebergs reported in: a. A64, 65-31.20S 059-28.80W
  20. HYDROLANT 1835/22 · Icebergs2022-07-22 → 2022-07-23
    Iceberg reported in: a. A64, 65-31.20S 059-28.80W

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