Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
3
since 1999
3,132
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%
Missiles391%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 372/24 · Icebergs2024-02-22 → 2024-02-23
    Icebergs reported in: a. A23A, 60-48.00S 051-38.40W
  2. HYDROLANT 366/24 · Icebergs2024-02-21 → 2024-02-22
    Icebergs reported in: a. A23A, 60-48.00S 051-38.40W
  3. HYDROLANT 359/24 · Icebergs2024-02-20 → 2024-02-21
    Icebergs reported in: a. A23A, 60-48.00S 051-38.40W
  4. HYDROLANT 350/24 · Icebergs2024-02-19 → 2024-02-20
    Icebergs reported in: a. A23A, 60-48.00S 051-38.40W
  5. HYDROLANT 343/24 · Icebergs2024-02-18 → 2024-02-19
    Icebergs reported in: a. A23A, 60-48.00S 051-38.40W
  6. HYDROLANT 333/24 · Icebergs2024-02-17 → 2024-02-18
    Icebergs reported in: a. A23A, 60-52.20S 051-00.00W
  7. HYDROLANT 328/24 · Icebergs2024-02-16 → 2024-02-17
    Icebergs reported in: a. A23A, 60-50.40S 051-00.00W
  8. HYDROLANT 318/24 · Icebergs2024-02-15 → 2024-02-16
    Icebergs reported in: a. A23A, 60-52.20S 051-00.00W
  9. HYDROLANT 310/24 · Icebergs2024-02-14 → 2024-02-15
    Icebergs reported in: a. A23A, 60-52.20S 051-00.00W
  10. HYDROLANT 308/24 · Icebergs2024-02-13 → 2024-02-14
    Icebergs reported in: a. A23A, 60-52.20S 051-00.00W
  11. HYDROLANT 303/24 · Icebergs2024-02-12 → 2024-02-13
    Icebergs reported in: a. A23A, 60-52.20S 051-00.00W
  12. HYDROLANT 298/24 · Icebergs2024-02-11 → 2024-02-12
    Icebergs reported in: a. A23A, 60-52.20S 051-00.00W
  13. HYDROLANT 293/24 · Icebergs2024-02-10 → 2024-02-10
    Icebergs reported in: a. A23A, 60-52.20S 051-00.00W
  14. HYDROLANT 279/24 · Icebergs2024-02-09 → 2024-02-10
    Icebergs reported in: a. A23A, 60-48.60S 050-48.60W
  15. HYDROLANT 272/24 · Icebergs2024-02-08 → 2024-02-09
    Icebergs reported in: a. A23A, 60-48.60S 050-48.60W
  16. HYDROLANT 266/24 · Icebergs2024-02-07 → 2024-02-08
    Icebergs reported in: a. A23A, 60-48.60S 050-48.60W
  17. HYDROLANT 263/24 · Icebergs2024-02-06 → 2024-02-07
    Icebergs reported in: a. A23A, 60-48.60S 050-48.60W
  18. HYDROLANT 253/24 · Icebergs2024-02-05 → 2024-02-06
    Icebergs reported in: a. A23A, 61-03.00S 050-16.20W
  19. HYDROLANT 250/24 · Icebergs2024-02-04 → 2024-02-05
    Icebergs reported in: a. A23A, 60-48.60S 050-48.60W
  20. HYDROLANT 245/24 · Icebergs2024-02-03 → 2024-02-04
    Iceberg reported in: a. A23A, 61-03.00S 050-16.20W

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