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 3163/18 · Icebergs2018-10-08 → 2018-10-09
    Icebergs reported in: a. B09F, 61-51S 054-29W
  2. HYDROLANT 3151/18 · Icebergs2018-10-07 → 2018-10-08
    Icebergs reported in: a. B09F, 61-51S 054-29W
  3. HYDROLANT 3142/18 · Icebergs2018-10-06 → 2018-10-07
    Icebergs reported in: a. B09F, 61-51S 054-29W
  4. HYDROLANT 3136/18 · Icebergs2018-10-05 → 2018-10-06
    Icebergs reported in: a. B09F, 61-36S 054-12W
  5. HYDROLANT 3123/18 · Icebergs2018-10-04 → 2018-10-05
    Icebergs reported in: a. B09F, 61-36S 054-12W
  6. HYDROLANT 3116/18 · Icebergs2018-10-03 → 2018-10-04
    Icebergs reported in: a. B09F, 61-36S 054-12W
  7. HYDROLANT 3105/18 · Icebergs2018-10-02 → 2018-10-03
    Icebergs reported in: a. B09F, 61-51S 054-29W
  8. HYDROLANT 3096/18 · Icebergs2018-10-01 → 2018-10-02
    Icebergs reported in: a. B09F, 61-36S 054-12W
  9. HYDROLANT 3011/18 · Icebergs2018-09-23 → 2018-09-24
    Icebergs reported in: a. B09F, 61-36S 054-12W
  10. HYDROLANT 3005/18 · Icebergs2018-09-22 → 2018-09-23
    Icebergs reported in: a. B09F, 61-36S 054-12W
  11. HYDROLANT 2965/18 · Icebergs2018-09-19 → 2018-09-20
    Icebergs reported in: a. B09F, 61-49S 054-30W
  12. HYDROLANT 2953/18 · Icebergs2018-09-18 → 2018-09-19
    Icebergs reported in: a. B09F, 61-49S 054-30W
  13. HYDROLANT 2938/18 · Icebergs2018-09-17 → 2018-09-18
    Icebergs reported in: a. B09F, 61-49S 054-30W
  14. HYDROLANT 2929/18 · Icebergs2018-09-16 → 2018-09-17
    Icebergs reported in: a. B09F, 61-49S 054-30W
  15. HYDROPAC 3364/18 · Icebergs2018-09-15 → 2018-09-16
    Iceberg B31 reported in 62-57S 072-14W
  16. HYDROLANT 2922/18 · Icebergs2018-09-15 → 2018-09-16
    Icebergs reported in: a. B09F, 61-46S 053-40W
  17. HYDROPAC 3345/18 · Icebergs2018-09-14 → 2018-09-15
    Iceberg B31 reported in 62-57S 072-14W
  18. HYDROLANT 2909/18 · Icebergs2018-09-14 → 2018-09-15
    Icebergs reported in: a. B09F, 61-46S 054-40W
  19. HYDROLANT 2886/18 · Icebergs2018-09-12 → 2018-09-13
    Icebergs reported in: a. B09F, 61-49S 054-30W
  20. HYDROLANT 2862/18 · Icebergs2018-09-09 → 2018-09-10
    Icebergs reported in: a. B09F, 61-49S 054-30W

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