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 2993/20 · Icebergs2020-10-02 → 2020-10-03
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 2980/20 · Icebergs2020-10-01 → 2020-10-02
    Icebergs reported in: a. A64, 69-44S 060-59W
  3. HYDROLANT 2972/20 · Icebergs2020-09-30 → 2020-10-01
    Icebergs reported in: a. A64, 69-44S 060-59W
  4. HYDROLANT 2961/20 · Icebergs2020-09-29 → 2020-09-30
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 2949/20 · Icebergs2020-09-28 → 2020-09-29
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 2940/20 · Icebergs2020-09-27 → 2020-09-28
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 2933/20 · Icebergs2020-09-26 → 2020-09-27
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROLANT 2923/20 · Icebergs2020-09-25 → 2020-09-26
    Icebergs reported in: a. A64, 69-44S 060-59W
  9. HYDROLANT 2909/20 · Icebergs2020-09-24 → 2020-09-25
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 2901/20 · Icebergs2020-09-23 → 2020-09-24
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROLANT 2889/20 · Icebergs2020-09-22 → 2020-09-23
    Icebergs reported in: a. A64, 69-44S 060-59W
  12. HYDROLANT 2880/20 · Icebergs2020-09-21 → 2020-09-22
    Icebergs reported in: a. A64, 69-44S 060-59W
  13. HYDROLANT 2875/20 · Icebergs2020-09-20 → 2020-09-21
    Icebergs reported in: a. A64, 69-43.8S 060-59.4W
  14. HYDROLANT 2870/20 · Icebergs2020-09-19 → 2020-09-20
    Icebergs reported in: a. A64, 69-43.8S 060-59.4W
  15. HYDROLANT 2840/20 · Icebergs2020-09-17 → 2020-09-18
    Icebergs reported in: a. A64, 69-43.8S 060-59.4W
  16. HYDROLANT 2825/20 · Icebergs2020-09-16 → 2020-09-17
    Icebergs reported in: a. A64, 69-43.8S 060-59.4W
  17. HYDROLANT 2812/20 · Icebergs2020-09-15 → 2020-09-16
    Icebergs reported in: a. A64, 69-43.8S 060-59.4W
  18. HYDROLANT 2809/20 · Icebergs2020-09-14 → 2020-09-15
    Icebergs reported in: a. A64, 69-43.8S 060-59.4W
  19. HYDROLANT 2802/20 · Icebergs2020-09-13 → 2020-09-14
    Icebergs reported in: a. A64, 69-43.8S 060-59.4W
  20. HYDROLANT 2792/20 · Icebergs2020-09-12 → 2020-09-13
    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.