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 2919/19 · Icebergs2019-09-24 → 2019-09-25
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 2907/19 · Icebergs2019-09-23 → 2019-09-24
    Icebergs reported in: a. A64, 69-44S 060-59W
  3. HYDROLANT 2898/19 · Icebergs2019-09-22 → 2019-09-23
    Icebergs reported in: a. A64, 69-44S 060-59W
  4. HYDROLANT 2893/19 · Icebergs2019-09-21 → 2019-09-22
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 2887/19 · Icebergs2019-09-20 → 2019-09-21
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 2871/19 · Icebergs2019-09-19 → 2019-09-20
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 2859/19 · Icebergs2019-09-18 → 2019-09-19
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROLANT 2850/19 · Icebergs2019-09-17 → 2019-09-18
    Icebergs reported in: a. A64, 69-44S 060-59W
  9. HYDROLANT 2824/19 · Icebergs2019-09-16 → 2019-09-17
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 2814/19 · Icebergs2019-09-15 → 2019-09-16
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROLANT 2808/19 · Icebergs2019-09-14 → 2019-09-15
    Icebergs reported in: a. A64, 69-44S 060-59W
  12. HYDROLANT 2771/19 · Icebergs2019-09-11 → 2019-09-12
    Icebergs reported in: a. A64, 69-44S 060-59W
  13. HYDROLANT 2748/19 · Icebergs2019-09-09 → 2019-09-10
    Icebergs reported in: a. A64, 69-44S 060-59W
  14. HYDROLANT 2728/19 · Icebergs2019-09-06 → 2019-09-07
    Icebergs reported in: a. A64, 69-44S 060-59W
  15. HYDROLANT 2694/19 · Icebergs2019-09-03 → 2019-09-04
    Icebergs reported in: a. A64, 69-44S 060-59W
  16. HYDROLANT 2681/19 · Icebergs2019-09-02 → 2019-09-03
    Icebergs reported in: a. A64, 69-44S 060-59W
  17. HYDROLANT 2674/19 · Icebergs2019-09-01 → 2019-09-02
    Icebergs reported in: a. A64, 69-44S 060-59W
  18. HYDROLANT 2669/19 · Icebergs2019-08-31 → 2019-09-01
    Icebergs reported in: a. A64, 69-44S 060-59W
  19. HYDROLANT 2660/19 · Icebergs2019-08-30 → 2019-08-31
    Icebergs reported in: a. A64, 69-44S 060-59W
  20. HYDROLANT 2615/19 · Icebergs2019-08-28 → 2019-08-29
    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.