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 3932/19 · Icebergs2019-12-22 → 2019-12-23
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 3861/19 · Surveys2019-12-16 → 2019-12-30
    Survey operations in progress until 29 dec by vessel hakuho maru in areas bound by a. 56-00S 067-16W 56-00S…
  3. HYDROLANT 3839/19 · Icebergs2019-12-14 → 2019-12-15
    Icebergs reported in: a. A64, 69-44S 060-59W
  4. HYDROLANT 3829/19 · Icebergs2019-12-13 → 2019-12-14
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 3812/19 · Icebergs2019-12-12 → 2019-12-13
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 3789/19 · Icebergs2019-12-10 → 2019-12-11
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 3777/19 · Icebergs2019-12-09 → 2019-12-10
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROLANT 3761/19 · Icebergs2019-12-07 → 2019-12-08
    Icebergs reported in: a. A64, 69-44S 060-59W
  9. HYDROLANT 3751/19 · Icebergs2019-12-06 → 2019-12-07
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 3737/19 · Icebergs2019-12-05 → 2019-12-06
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROPAC 4024/19 · Missiles2019-12-05 → 2019-12-11
    Hazardous operations, space debris 0830Z to 1030Z daily 10 and 11 dec in area bound by 59-42.6S 165-49.2E,…
  12. HYDROLANT 3720/19 · Icebergs2019-12-04 → 2019-12-05
    Icebergs reported in: a. A64, 69-44S 060-59W
  13. HYDROLANT 3707/19 · Icebergs2019-12-03 → 2019-12-04
    Icebergs reported in: a. A64, 69-44S 060-59W
  14. HYDROLANT 3695/19 · Icebergs2019-12-02 → 2019-12-03
    Icebergs reported in: a. A64, 69-44S 060-59W
  15. HYDROLANT 3630/19 · Icebergs2019-11-26 → 2019-11-27
    Icebergs reported in: a. A64, 69-44S 060-59W
  16. HYDROLANT 3614/19 · Icebergs2019-11-25 → 2019-11-26
    Icebergs reported in: a. A64, 69-44S 060-59W
  17. HYDROLANT 3599/19 · Icebergs2019-11-24 → 2019-11-25
    Icebergs reported in: a. A64, 69-44S 060-59W
  18. HYDROLANT 3595/19 · Icebergs2019-11-23 → 2019-11-24
    Icebergs reported in: a. A64, 69-44S 060-59W
  19. HYDROLANT 3496/19 · Icebergs2019-11-14 → 2019-11-15
    Icebergs reported in: a. A64, 69-44S 060-59W
  20. HYDROLANT 3484/19 · Icebergs2019-11-13 → 2019-11-14
    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.