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 4076/18 · Icebergs2018-12-30 → 2018-12-31
    Icebergs reported in: a. B09F, 61-22S 054-28W
  2. HYDROLANT 4066/18 · Icebergs2018-12-29 → 2018-12-30
    Icebergs reported in: a. B09F, 61-22S 054-28W
  3. HYDROLANT 4037/18 · Icebergs2018-12-27 → 2018-12-28
    Icebergs reported in: a. B09F, 61-22S 054-28W
  4. HYDROLANT 4023/18 · Icebergs2018-12-26 → 2018-12-27
    Icebergs reported in: a. B09F, 61-22S 054-28W
  5. HYDROLANT 4014/18 · Icebergs2018-12-24 → 2018-12-25
    Icebergs reported in: a. B09F, 61-22S 054-28W
  6. HYDROLANT 3969/18 · Icebergs2018-12-20 → 2018-12-21
    Icebergs reported in: a. B09F, 61-34S 054-50W
  7. HYDROLANT 3943/18 · Icebergs2018-12-18 → 2018-12-19
    Icebergs reported in: a. B09F, 61-34S 054-50W
  8. HYDROLANT 3937/18 · Icebergs2018-12-17 → 2018-12-18
    Icebergs reported in: a. B09F, 61-34S 054-50W
  9. HYDROLANT 3928/18 · Icebergs2018-12-16 → 2018-12-17
    Icebergs reported in: a. B09F, 61-34S 054-50W
  10. HYDROLANT 3913/18 · Icebergs2018-12-15 → 2018-12-16
    Icebergs reported in: a. B09F, 61-34S 054-50W
  11. HYDROLANT 3901/18 · Icebergs2018-12-14 → 2018-12-15
    Icebergs reported in: a. B09F, 61-36S 054-12W
  12. HYDROLANT 3885/18 · Icebergs2018-12-13 → 2018-12-14
    Icebergs reported in: a. B09F, 61-45S 054-55W
  13. HYDROLANT 3872/18 · Icebergs2018-12-12 → 2018-12-13
    Icebergs reported in: a. B09F, 61-36S 054-12W
  14. HYDROLANT 3865/18 · Icebergs2018-12-11 → 2018-12-12
    Icebergs reported in: a. B09F, 61-45S 054-55W
  15. HYDROLANT 3843/18 · Icebergs2018-12-10 → 2018-12-11
    Icebergs reported in: a. B09F, 61-45S 054-55W
  16. HYDROLANT 3831/18 · Icebergs2018-12-09 → 2018-12-10
    Icebergs reported in: a. B09F, 61-36S 054-12W
  17. HYDROLANT 3825/18 · Icebergs2018-12-08 → 2018-12-09
    Icebergs reported in: a. B09F, 61-45S 054-55W
  18. HYDROLANT 3816/18 · Icebergs2018-12-07 → 2018-12-08
    Icebergs reported in: a. B09F, 61-45S 054-39W
  19. HYDROLANT 3779/18 · Icebergs2018-12-04 → 2018-12-05
    Icebergs reported in: a. B09F, 61-36S 054-12W
  20. HYDROLANT 3771/18 · Icebergs2018-12-03 → 2018-12-04
    Icebergs reported in: a. B09F, 61-45S 054-39W

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