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 843/24 · Icebergs2024-04-20 → 2024-04-21
    Icebergs reported in: a. A23A, 59-06.00S 045-07.80W
  2. HYDROLANT 837/24 · Icebergs2024-04-19 → 2024-04-20
    Icebergs reported in: a. A23A, 59-06.00S 045-07.80W
  3. HYDROLANT 831/24 · Icebergs2024-04-18 → 2024-04-19
    Icebergs reported in: a. A23A, 59-06.00S 045-07.80W
  4. HYDROLANT 818/24 · Icebergs2024-04-17 → 2024-04-18
    Icebergs reported in: a. A23A, 59-06.00S 045-07.80W
  5. HYDROLANT 805/24 · Icebergs2024-04-16 → 2024-04-17
    Icebergs reported in: a. A23A, 59-06.00S 045-07.80W
  6. HYDROLANT 798/24 · Icebergs2024-04-15 → 2024-04-16
    Icebergs reported in: a. A23A, 59-06.00S 045-07.80W
  7. HYDROLANT 791/24 · Icebergs2024-04-14 → 2024-04-15
    Icebergs reported in: a. A23A, 59-06.00S 045-07.80W
  8. HYDROLANT 785/24 · Icebergs2024-04-13 → 2024-04-14
    Icebergs reported in: a. A23A, 58-53.40S 044-47.40W
  9. HYDROLANT 774/24 · Icebergs2024-04-12 → 2024-04-13
    Icebergs reports in: a. A23A, 58-53.40S 044-47.40W
  10. HYDROLANT 762/24 · Icebergs2024-04-11 → 2024-04-12
    Icebergs reports in: a. A23A, 58-53.40S 044-47.40W
  11. HYDROLANT 753/24 · Icebergs2024-04-10 → 2024-04-11
    Icebergs reported in: a. A23A, 58-53.40S 044-47.40W
  12. HYDROLANT 747/24 · Icebergs2024-04-09 → 2024-04-10
    Icebergs reported in: a. A23A, 58-53.40S 044-47.40W
  13. HYDROLANT 738/24 · Icebergs2024-04-08 → 2024-04-09
    Icebergs reported in: a. A23A, 58-53.40S 044-47.40W
  14. HYDROLANT 732/24 · Icebergs2024-04-07 → 2024-04-08
    Icebergs reported in: a. A23A, 58-53.40S 044-47.40W
  15. HYDROLANT 725/24 · Icebergs2024-04-06 → 2024-04-07
    Icebergs reported in: a. A23A, 59-39.00S 045-22.20W
  16. HYDROLANT 715/24 · Icebergs2024-04-05 → 2024-04-06
    Icebergs reported in: a. A23A, 59-37.20S 45-22.20W
  17. HYDROLANT 706/24 · Icebergs2024-04-04 → 2024-04-05
    Icebergs reported in: a. A23A, 59-37.20S 45-22.20W
  18. HYDROLANT 691/24 · Icebergs2024-04-03 → 2024-04-04
    Icebergs reported in: a. A23A, 59-37.20S 45-22.20W
  19. HYDROLANT 683/24 · Icebergs2024-04-02 → 2024-04-03
    Icebergs reported in: a. A23A, 59-37.20S 45-22.20W
  20. HYDROLANT 672/24 · Icebergs2024-04-01 → 2024-04-02
    Icebergs reported in: a. A23A, 59-22.80S 045-13.20W

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