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 3215/20 · Icebergs2020-10-22 → 2020-10-23
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 3184/20 · Icebergs2020-10-20 → 2020-10-21
    Icebergs reported in: a. A64, 69-44S 060-59W
  3. HYDROPAC 3053/20 · Missiles2020-10-20 → 2020-10-26
    Hazardous operations, space debris 1830Z to 2030Z daily 25 and 26 oct in area bound by 59-42.6S 165-49.2E,…
  4. HYDROLANT 3171/20 · Icebergs2020-10-19 → 2020-10-20
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 3161/20 · Icebergs2020-10-18 → 2020-10-19
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 3156/20 · Icebergs2020-10-17 → 2020-10-18
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 3146/20 · Icebergs2020-10-16 → 2020-10-17
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROLANT 3133/20 · Icebergs2020-10-15 → 2020-10-16
    Icebergs reported in: a. A64, 69-44S 060-59W
  9. HYDROLANT 3124/20 · Icebergs2020-10-14 → 2020-10-15
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 3115/20 · Icebergs2020-10-13 → 2020-10-14
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROLANT 3102/20 · Icebergs2020-10-12 → 2020-10-13
    Icebergs reported in: a. A64, 69-44S 060-59W
  12. HYDROLANT 3091/20 · Icebergs2020-10-11 → 2020-10-12
    Icebergs reported in: a. A64, 69-44S 060-59W
  13. HYDROLANT 3085/20 · Icebergs2020-10-10 → 2020-10-11
    Icebergs reported in: a. A64, 69-44S 060-59W
  14. HYDROLANT 3070/20 · Icebergs2020-10-09 → 2020-10-10
    Icebergs reported in: a. A64, 69-44S 060-59W
  15. HYDROLANT 3060/20 · Icebergs2020-10-08 → 2020-10-09
    Icebergs reported in: a. A64, 69-44S 060-59W
  16. HYDROLANT 3050/20 · Icebergs2020-10-07 → 2020-10-08
    Icebergs reported in: a. A64, 69-44S 060-59W
  17. HYDROLANT 3038/20 · Icebergs2020-10-06 → 2020-10-07
    Icebergs reported in: a. A64, 69-44S 060-59W
  18. HYDROLANT 3024/20 · Icebergs2020-10-05 → 2020-10-06
    Icebergs reported in: a. A64, 69-44S 060-59W
  19. HYDROLANT 3018/20 · Icebergs2020-10-04 → 2020-10-05
    Icebergs reported in: a. A64, 69-44S 060-59W
  20. HYDROLANT 3005/20 · Icebergs2020-10-03 → 2020-10-04
    Icebergs reported in: a. A64, 69-44S 060-59W

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