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 2416/20 · Icebergs2020-08-02 → 2020-08-03
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 2401/20 · Icebergs2020-07-31 → 2020-08-01
    Icebergs reported in: a. A64, 69-44S 060-59W
  3. HYDROLANT 2389/20 · Icebergs2020-07-30 → 2020-07-31
    Icebergs reported in: a. A64, 69-44S 060-59W
  4. HYDROLANT 2374/20 · Icebergs2020-07-29 → 2020-07-30
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 2362/20 · Icebergs2020-07-28 → 2020-07-29
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 2355/20 · Icebergs2020-07-27 → 2020-07-28
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 2348/20 · Icebergs2020-07-26 → 2020-07-27
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROLANT 2346/20 · Icebergs2020-07-25 → 2020-07-26
    Icebergs reported in: a. A64, 69-44S 060-59W
  9. HYDROLANT 2334/20 · Icebergs2020-07-24 → 2020-07-25
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 2324/20 · Icebergs2020-07-23 → 2020-07-24
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROLANT 2311/20 · Icebergs2020-07-22 → 2020-07-23
    Icebergs reported in: a. A64, 69-44S 061-00W
  12. HYDROLANT 2300/20 · Icebergs2020-07-21 → 2020-07-22
    Icebergs reported in: a. A64, 69-44S 061-00W
  13. HYDROLANT 2273/20 · Icebergs2020-07-19 → 2020-07-20
    Icebergs reported in: a. A64, 69-44S 061-00W
  14. HYDROLANT 2267/20 · Icebergs2020-07-18 → 2020-07-19
    Icebergs reported in: a. A64, 69-44S 061-00W
  15. HYDROLANT 2257/20 · Icebergs2020-07-17 → 2020-07-18
    Icebergs reported in: a. A64, 69-44S 061-00W
  16. HYDROLANT 2243/20 · Icebergs2020-07-16 → 2020-07-17
    Icebergs reported in: a. A64, 69-44S 061-00W
  17. HYDROLANT 2232/20 · Icebergs2020-07-15 → 2020-07-16
    Icebergs reported in: a. A64, 69-44S 060-59W
  18. HYDROLANT 2222/20 · Icebergs2020-07-14 → 2020-07-15
    Icebergs reported in: a. A64, 69-44S 060-59W
  19. HYDROLANT 2215/20 · Icebergs2020-07-13 → 2020-07-14
    Icebergs reported in: a. A64, 69-44S 060-59W
  20. HYDROLANT 2205/20 · Icebergs2020-07-12 → 2020-07-13
    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.