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. HYDROPAC 3838/17 · Icebergs2017-11-07 → 2017-11-08
    Icebergs reported in: a. B22A, 74-04S 108-55W
  2. HYDROPAC 3814/17 · Icebergs2017-11-05 → 2017-11-06
    Icebergs reported in: a. B22A, 74-04S 108-55W
  3. HYDROPAC 3807/17 · Icebergs2017-11-04 → 2017-11-05
    Icebergs reported in: a. B22A, 74-04S 108-55W
  4. HYDROPAC 3778/17 · Icebergs2017-11-03 → 2017-11-04
    Icebergs reported in: a. B22A, 74-04S 108-55W
  5. HYDROPAC 3755/17 · Icebergs2017-11-02 → 2017-11-03
    Icebergs reported in: a. B22A, 74-04S 108-55W
  6. HYDROPAC 3743/17 · Icebergs2017-11-01 → 2017-11-02
    Icebergs reported in: a. B22A, 74-04S 108-55W
  7. HYDROPAC 3729/17 · Icebergs2017-10-31 → 2017-11-01
    Icebergs reported in: a. B22A, 74-04S 108-55W
  8. HYDROPAC 3713/17 · Icebergs2017-10-30 → 2017-10-31
    Icebergs reported in: a. B22A, 74-04S 108-55W
  9. HYDROPAC 3677/17 · Icebergs2017-10-27 → 2017-10-28
    Icebergs reported in: a. B22A, 74-04S 108-55W
  10. HYDROPAC 3656/17 · Icebergs2017-10-26 → 2017-10-27
    Icebergs reported in: a. B22A, 74-04S 108-55W
  11. HYDROPAC 3642/17 · Icebergs2017-10-25 → 2017-10-26
    Icebergs reported in: a. B22A, 74-04S 108-55W
  12. HYDROPAC 3626/17 · Icebergs2017-10-24 → 2017-10-25
    Icebergs reported in: a. B22A, 74-04S 108-55W
  13. HYDROPAC 3614/17 · Icebergs2017-10-23 → 2017-10-24
    Icebergs reported in: a. B22A, 74-04S 108-55W
  14. HYDROPAC 3606/17 · Icebergs2017-10-22 → 2017-10-23
    Icebergs reported in: a. B22A, 74-04S 108-55W
  15. HYDROPAC 3597/17 · Icebergs2017-10-21 → 2017-10-22
    Icebergs reported in: a. B22A, 74-04S 108-55W
  16. HYDROPAC 3585/17 · Icebergs2017-10-20 → 2017-10-21
    Icebergs reported in: a. B22A, 74-04S 108-55W
  17. HYDROPAC 3574/17 · Icebergs2017-10-19 → 2017-10-20
    Icebergs reported in: a. B22A, 74-04S 108-55W
  18. HYDROPAC 3567/17 · Icebergs2017-10-18 → 2017-10-19
    Icebergs reported in: a. B22A, 74-04S 108-55W
  19. HYDROPAC 3556/17 · Icebergs2017-10-17 → 2017-10-18
    Icebergs reported in: a. B22A, 74-04S 108-55W
  20. HYDROPAC 3540/17 · Icebergs2017-10-16 → 2017-10-17
    Icebergs reported in: a. B22A, 74-04S 108-55W

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