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 1900/23 · Icebergs2023-08-24 → 2023-08-25
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  2. HYDROLANT 1885/23 · Icebergs2023-08-23 → 2023-08-24
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  3. HYDROLANT 1878/23 · Icebergs2023-08-22 → 2023-08-23
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  4. HYDROLANT 1868/23 · Icebergs2023-08-21 → 2023-08-22
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  5. HYDROLANT 1858/23 · Icebergs2023-08-20 → 2023-08-21
    Icebergs reported in: a. A23A, 68-00.00S 054-00.00W
  6. HYDROLANT 1850/23 · Icebergs2023-08-19 → 2023-08-20
    Icebergs reported in: a. A23A, 66-15.00S 054-27.60W
  7. HYDROLANT 1839/23 · Icebergs2023-08-18 → 2023-08-19
    Icebergs reported in: a. A23A, 66-15.00S 054-27.60W
  8. HYDROLANT 1835/23 · Icebergs2023-08-18 → 2023-08-21
    Icebergs reported in: a. 61-45.80S 055-02.50W
  9. HYDROLANT 1828/23 · Icebergs2023-08-17 → 2023-08-18
    Icebergs reported in: a. A23A, 66-15.00S 054-27.60W
  10. HYDROLANT 1818/23 · Icebergs2023-08-16 → 2023-08-17
    Icebergs reported in: a. A23A, 66-15.00S 054-27.60W
  11. HYDROLANT 1808/23 · Icebergs2023-08-15 → 2023-08-16
    Icebergs reported in: a. A23A, 66-15.00S 054-27.60W
  12. HYDROLANT 1802/23 · Icebergs2023-08-14 → 2023-08-15
    Icebergs reported in: a. A23A, 66-15.00S 054-27.60W
  13. HYDROLANT 1797/23 · Icebergs2023-08-14 → 2023-08-17
    Icebergs reported adrift in vicinity: a. 61-49.50S 055-16.30W
  14. HYDROLANT 1796/23 · Icebergs2023-08-13 → 2023-08-14
    Icebergs reported in: a. A23A, 66-34.20S 055-03.00W
  15. HYDROLANT 1789/23 · Icebergs2023-08-12 → 2023-08-13
    Icebergs reported in: a. A23A, 66-34.20S 055-03.00W
  16. HYDROLANT 1778/23 · Icebergs2023-08-11 → 2023-08-12
    Icebergs reported in: a. A23A, 66-34.20S 055-03.00W
  17. HYDROLANT 1773/23 · Icebergs2023-08-10 → 2023-08-11
    Icebergs reported in: a. A23A, 66-34.20S 055-03.00W
  18. HYDROLANT 1764/23 · Icebergs2023-08-09 → 2023-08-10
    Icebergs reported in: a. A23A, 66-34.20S 055-03.00W
  19. HYDROLANT 1756/23 · Icebergs2023-08-08 → 2023-08-09
    Icebergs reported in: a. A23A, 70-30.00S 055-03.00W
  20. HYDROLANT 1753/23 · Icebergs2023-08-08 → 2023-08-11
    Icebergs reported adrift in vicinity: a. 61-58.50S 056-11.00W

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