Southern Ocean

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

in force
3
last 12 months
5
since 1999
3,133
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

Icebergs2,99295%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,130 cancelled

  1. HYDROLANT 2651/18 · Icebergs2018-08-19 → 2018-08-20
    Icebergs reported on 18 aug in: a. B09F, 61-46S 053-40W
  2. HYDROPAC 3036/18 · Icebergs2018-08-18 → 2018-08-19
    Iceberg B31, reported in 62-57S 072-14W
  3. HYDROLANT 2644/18 · Icebergs2018-08-18 → 2018-08-19
    Icebergs reported on 18 aug in: a. B09F, 61-46S 053-40W
  4. HYDROLANT 2640/18 · Icebergs2018-08-17 → 2018-08-18
    Icebergs reported on 17 aug in: a. B09F, 61-41S 053-56W
  5. HYDROPAC 3008/18 · Icebergs2018-08-16 → 2018-08-17
    Iceberg B31, reported in 62-57S 072-14W
  6. HYDROLANT 2619/18 · Icebergs2018-08-16 → 2018-08-17
    Icebergs reported on 16 aug in: a. B09F, 61-46S 053-40W
  7. HYDROLANT 2607/18 · Icebergs2018-08-15 → 2018-08-16
    Icebergs reported on 15 aug in: a. B09F, 61-42S 054-21W
  8. HYDROLANT 2599/18 · Icebergs2018-08-14 → 2018-08-15
    Icebergs reported on 14 aug in: a. B09F, 61-42S 054-21W
  9. HYDROLANT 2593/18 · Icebergs2018-08-13 → 2018-08-14
    Icebergs reported in: a. B09F, 61-46S 053-40W
  10. HYDROPAC 2959/18 · Icebergs2018-08-13 → 2018-08-14
    Iceberg B31, reported in 62-57S 072-14W
  11. HYDROLANT 2586/18 · Icebergs2018-08-13 → 2018-08-13
    Icebergs reported in: a. B09F, 61-46S 053-40W
  12. HYDROPAC 2944/18 · Icebergs2018-08-12 → 2018-08-13
    Iceberg B31, reported in 62-57S 072-14W
  13. HYDROLANT 2577/18 · Icebergs2018-08-12 → 2018-08-13
    Icebergs reported in: a. B09F, 61-46S 053-40W
  14. HYDROLANT 2570/18 · Icebergs2018-08-11 → 2018-08-12
    Icebergs reported at 111450Z aug in: a. B09F, 61-42S 054-21W
  15. HYDROLANT 2563/18 · Icebergs2018-08-10 → 2018-08-11
    Icebergs reported at 101450Z aug in: a. B09F, 61-41S 053-56W
  16. HYDROPAC 2896/18 · Icebergs2018-08-09 → 2018-08-10
    Iceberg B31, reported in 62-57S 072-14W
  17. HYDROLANT 2551/18 · Icebergs2018-08-09 → 2018-08-10
    Icebergs reported on 09 aug in: a. B09F, 61-46S 053-40W
  18. HYDROPAC 2880/18 · Icebergs2018-08-08 → 2018-08-09
    Iceberg B31, reported in 62-57S 072-14W
  19. HYDROLANT 2546/18 · Icebergs2018-08-08 → 2018-08-09
    Icebergs reported in: a. B09F, 61-46S 053-40W
  20. HYDROLANT 2537/18 · Icebergs2018-08-07 → 2018-08-08
    Icebergs reported in: a. B09F, 61-41S 053-56W

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