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 4225/17 · Missiles2017-12-02 → 2017-12-02
    Hazardous operations space debris 071100Z to 161100Z dec in area bound by 57-06S 179-54W, 56-42S 176-36W,…
  2. HYDROPAC 4209/17 · Icebergs2017-12-01 → 2017-12-02
    Icebergs reported in: a. B22A, 74-04S 108-54W
  3. HYDROPAC 4187/17 · Icebergs2017-11-30 → 2017-12-01
    Icebergs reported in: a. B22A, 74-04S 108-54W
  4. HYDROPAC 4154/17 · Icebergs2017-11-28 → 2017-11-29
    Icebergs reported in: a. B22A, 74-04S 108-54W
  5. HYDROPAC 4134/17 · Icebergs2017-11-27 → 2017-11-28
    Icebergs reported in: a. B22A, 74-04S 108-54W
  6. HYDROPAC 4102/17 · Icebergs2017-11-24 → 2017-11-25
    Icebergs reported in: a. B22A, 74-04S 108-54W
  7. HYDROPAC 4084/17 · Icebergs2017-11-23 → 2017-11-24
    Icebergs reported in: a. B22A, 74-04S 108-54W
  8. HYDROPAC 4057/17 · Icebergs2017-11-21 → 2017-11-22
    Icebergs reported in: a. B22A, 74-04S 108-54W
  9. HYDROPAC 4045/17 · Icebergs2017-11-20 → 2017-11-21
    Icebergs reported in: a. B22A, 74-04S 108-54W
  10. HYDROPAC 4030/17 · Icebergs2017-11-19 → 2017-11-20
    Icebergs reported in: a. B22A, 74-04S 108-54W
  11. HYDROPAC 4002/17 · Icebergs2017-11-17 → 2017-11-18
    Icebergs reported in: a. B22A, 74-04S 108-55W
  12. HYDROPAC 3982/17 · Icebergs2017-11-16 → 2017-11-17
    Icebergs reported in: a. B22A, 74-04S 108-55W
  13. HYDROPAC 3964/17 · Icebergs2017-11-15 → 2017-11-16
    Icebergs reported in: a. B22A, 74-04S 108-55W
  14. HYDROPAC 3945/17 · Icebergs2017-11-14 → 2017-11-15
    Icebergs reported in: a. B22A, 74-04S 108-55W
  15. HYDROPAC 3931/17 · Icebergs2017-11-13 → 2017-11-14
    Icebergs reported in: a. B22A, 74-04S 108-55W
  16. HYDROPAC 3916/17 · Icebergs2017-11-12 → 2017-11-13
    Icebergs reported in: a. B22A, 74-04S 108-55W
  17. HYDROPAC 3904/17 · Icebergs2017-11-11 → 2017-11-12
    Icebergs reported in: a. B22A, 74-04S 108-55W
  18. HYDROPAC 3890/17 · Icebergs2017-11-10 → 2017-11-11
    Icebergs reported in: a. B22A, 74-04S 108-55W
  19. HYDROPAC 3874/17 · Icebergs2017-11-09 → 2017-11-10
    Icebergs reported in: a. B22A, 74-04S 108-55W
  20. HYDROPAC 3856/17 · Icebergs2017-11-08 → 2017-11-09
    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.