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 3162/19 · Icebergs2019-10-16 → 2019-10-17
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 3144/19 · Icebergs2019-10-15 → 2019-10-16
    Icebergs reported in: a. A64, 69-44S 060-59W
  3. HYDROLANT 3135/19 · Icebergs2019-10-14 → 2019-10-15
    Icebergs reported in: a. A64, 69-44S 060-59W
  4. HYDROLANT 3123/19 · Icebergs2019-10-13 → 2019-10-14
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 3113/19 · Icebergs2019-10-12 → 2019-10-13
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 3102/19 · Icebergs2019-10-11 → 2019-10-12
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 3080/19 · Icebergs2019-10-10 → 2019-10-11
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROPAC 3336/19 · Missiles2019-10-09 → 2019-10-17
    Cancel this msg 280430Z oct 19
  9. HYDROLANT 3049/19 · Icebergs2019-10-07 → 2019-10-08
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 3041/19 · Icebergs2019-10-06 → 2019-10-07
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROLANT 3035/19 · Icebergs2019-10-05 → 2019-10-06
    Icebergs reported in: a. A64, 69-44S 060-59W
  12. HYDROLANT 3017/19 · Icebergs2019-10-03 → 2019-10-04
    Icebergs reported in: a. A64, 69-44S 060-59W
  13. HYDROLANT 3009/19 · Icebergs2019-10-02 → 2019-10-03
    Icebergs reported in: a. A64, 69-44S 060-59W
  14. HYDROLANT 2995/19 · Icebergs2019-10-01 → 2019-10-02
    Icebergs reported in: a. A64, 69-44S 060-59W
  15. HYDROLANT 2984/19 · Icebergs2019-09-30 → 2019-10-01
    Icebergs reported in: a. A64, 69-44S 060-59W
  16. HYDROLANT 2980/19 · Icebergs2019-09-29 → 2019-09-30
    Icebergs reported in: a. A64, 69-44S 060-59W
  17. HYDROLANT 2977/19 · Icebergs2019-09-28 → 2019-09-29
    Icebergs reported in: a. A64, 69-44S 060-59W
  18. HYDROLANT 2960/19 · Icebergs2019-09-27 → 2019-09-28
    Icebergs reported in: a. A64, 69-44S 060-59W
  19. HYDROLANT 2936/19 · Icebergs2019-09-26 → 2019-09-27
    Icebergs reported in: a. A64, 69-44S 060-59W
  20. HYDROLANT 2925/19 · Icebergs2019-09-25 → 2019-09-26
    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.