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 2798/23 · Icebergs2023-12-04 → 2023-12-07
    Iceberg reported in 62-28.40S 053-48.90W
  2. HYDROLANT 2790/23 · Icebergs2023-12-03 → 2023-12-04
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  3. HYDROLANT 2788/23 · Icebergs2023-12-02 → 2023-12-03
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  4. HYDROLANT 2782/23 · Icebergs2023-12-01 → 2023-12-02
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  5. HYDROLANT 2767/23 · Icebergs2023-11-30 → 2023-12-01
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  6. HYDROLANT 2758/23 · Icebergs2023-11-29 → 2023-11-30
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  7. HYDROLANT 2745/23 · Icebergs2023-11-28 → 2023-11-29
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  8. HYDROLANT 2736/23 · Icebergs2023-11-27 → 2023-11-28
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  9. HYDROLANT 2731/23 · Icebergs2023-11-26 → 2023-11-27
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  10. HYDROLANT 2723/23 · Icebergs2023-11-25 → 2023-11-26
    Icebergs reported in: a. A23A, 62-49.20S 052-26.40W
  11. HYDROLANT 2710/23 · Icebergs2023-11-24 → 2023-11-25
    Icebergs reported in: a. A23A, 62-57.60S 051-53.40W
  12. HYDROLANT 2708/23 · Icebergs2023-11-24 → 2023-11-27
    Iceberg reported in 62-53.10S 053-06.10W
  13. HYDROLANT 2690/23 · Icebergs2023-11-22 → 2023-11-23
    Icebergs reported in: a. A23A, 62-57.60S 051-53.40W
  14. HYDROLANT 2678/23 · Icebergs2023-11-21 → 2023-11-22
    Icebergs reported in: a. A23A, 62-57.60S 051-53.40W
  15. HYDROLANT 2669/23 · Icebergs2023-11-20 → 2023-11-21
    Icebergs reported in: a. A23A, 62-57.60S 051-53.40W
  16. HYDROLANT 2662/23 · Icebergs2023-11-19 → 2023-11-20
    Icebergs reported in: a. A23A, 63-07.80S 051-40.20W
  17. HYDROLANT 2657/23 · Icebergs2023-11-18 → 2023-11-19
    Icebergs reported in: a. A23A, 63-07.80S 051-40.20W
  18. HYDROLANT 2638/23 · Icebergs2023-11-17 → 2023-11-18
    Iceberg reported in: a. A23A, 63-07.80S 051-40.20W
  19. HYDROLANT 2629/23 · Icebergs2023-11-16 → 2023-11-17
    Iceberg reported in: a. 63-07.80S 051-40.20W
  20. HYDROLANT 2613/23 · Icebergs2023-11-15 → 2023-11-16
    Icebergs reported in: a. A23A, 63-07.80S 051-40.20W

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