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 931/18 · Icebergs2018-03-18 → 2018-03-19
    Icebergs reported in: a. B15T, 60-20S 050-31W
  2. HYDROPAC 1064/18 · Icebergs2018-03-17 → 2018-03-18
    Icebergs reported in: a. B22A, 74-04S 108-54W
  3. HYDROLANT 927/18 · Icebergs2018-03-17 → 2018-03-18
    Icebergs reported in: a. B15T, 60-20S 050-51W
  4. HYDROLANT 919/18 · Icebergs2018-03-16 → 2018-03-17
    Icebergs reported in: a. B15T, 60-21S 051-02W
  5. HYDROPAC 1041/18 · Icebergs2018-03-16 → 2018-03-17
    Icebergs reported in: a. B22A, 74-04S 108-54W
  6. HYDROPAC 1023/18 · Icebergs2018-03-15 → 2018-03-16
    Icebergs reported in: a. B22A, 74-04S 108-54W
  7. HYDROLANT 902/18 · Icebergs2018-03-15 → 2018-03-16
    Icebergs reported in: a. B15T, 60-24S 051-15W
  8. HYDROPAC 999/18 · Icebergs2018-03-14 → 2018-03-15
    Icebergs reported in: a. B22A, 74-04S 108-54W
  9. HYDROPAC 985/18 · Icebergs2018-03-13 → 2018-03-14
    Icebergs reported in: a. B22A, 74-04S 108-54W
  10. HYDROPAC 973/18 · Icebergs2018-03-12 → 2018-03-13
    Icebergs reported in: a. B22A, 74-04S 108-54W
  11. HYDROLANT 868/18 · Icebergs2018-03-11 → 2018-03-12
    Icebergs reported in: A.B15T 60-35S 052-01W
  12. HYDROPAC 951/18 · Icebergs2018-03-10 → 2018-03-11
    Icebergs reported in: a. B22A, 74-04S 108-54W
  13. HYDROLANT 859/18 · Icebergs2018-03-10 → 2018-03-11
    Icebergs reported in: a. B15T, 60-36S 052-05W
  14. HYDROLANT 838/18 · Icebergs2018-03-09 → 2018-03-10
    Icebergs reported in: a. B15T, 60-37S 052-15W
  15. HYDROPAC 929/18 · Icebergs2018-03-09 → 2018-03-10
    Icebergs reported in: a. B22A, 74-04S 108-54W
  16. HYDROPAC 916/18 · Icebergs2018-03-08 → 2018-03-09
    Icebergs reported in: a. B22A, 74-04S 108-54W
  17. HYDROLANT 823/18 · Icebergs2018-03-08 → 2018-03-09
    Icebergs reported in: a. B15T, 60-40S 052-16W
  18. HYDROPAC 898/18 · Icebergs2018-03-07 → 2018-03-08
    Icebergs reported in: a. B22A, 74-04S 108-54W
  19. HYDROPAC 877/18 · Icebergs2018-03-06 → 2018-03-07
    Icebergs reported in: a. B22A, 74-04S 108-54W
  20. HYDROPAC 864/18 · Icebergs2018-03-05 → 2018-03-06
    Icebergs reported in: a. B22A, 74-04S 108-54W

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