Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
3
since 1999
3,131
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

Icebergs2,99095%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,128 cancelled

  1. HYDROLANT 1109/22 · Icebergs2022-04-20 → 2022-04-21
    Icebergs reported in: a. A64, 66-11S 060-19W
  2. HYDROLANT 1103/22 · Icebergs2022-04-19 → 2022-04-20
    Icebergs reported in: a. A64, 66-11S 060-19W
  3. HYDROLANT 1091/22 · Icebergs2022-04-18 → 2022-04-19
    Icebergs reported in: a. A64, 66-11S 060-19W
  4. HYDROLANT 1089/22 · Icebergs2022-04-17 → 2022-04-18
    Icebergs reported in: a. A64, 66-11S 060-19W
  5. HYDROLANT 1081/22 · Icebergs2022-04-16 → 2022-04-17
    Icebergs reported in: a. A64, 66-53S 059-30W
  6. HYDROLANT 1080/22 · Icebergs2022-04-16 → 2022-04-17
    Icebergs reported in: a. B09I, 54-47S 028-05W
  7. HYDROLANT 1074/22 · Icebergs2022-04-15 → 2022-04-16
    Icebergs reported in: a. A64, 66-53S 059-30W
  8. HYDROLANT 1073/22 · Icebergs2022-04-15 → 2022-04-16
    Icebergs reported in: a. B09I, 54-50S 028-16W
  9. HYDROLANT 1068/22 · Icebergs2022-04-14 → 2022-04-15
    Icebergs reported in: a. A64, 66-53S 059-30W
  10. HYDROLANT 1067/22 · Icebergs2022-04-14 → 2022-04-15
    Icebergs reported in: a. B09I, 54-47S 028-21W
  11. HYDROLANT 1054/22 · Icebergs2022-04-13 → 2022-04-14
    Icebergs reported in: a. A64, 66-53S 059-30W
  12. HYDROLANT 1053/22 · Icebergs2022-04-13 → 2022-04-14
    Icebergs reported in: a. B09I, 54-47S 028-21W
  13. HYDROLANT 1044/22 · Icebergs2022-04-12 → 2022-04-13
    Icebergs reported in: a. A64, 66-53S 059-30W
  14. HYDROLANT 1043/22 · Icebergs2022-04-12 → 2022-04-13
    Icebergs reported in: a. B09I, 54-49S 028-22W
  15. HYDROLANT 1034/22 · Icebergs2022-04-11 → 2022-04-12
    Icebergs reported in: a. A64, 66-53S 059-30W
  16. HYDROLANT 1033/22 · Icebergs2022-04-11 → 2022-04-12
    Icebergs reported in: a. B09I, 54-49S 028-25W
  17. HYDROLANT 1023/22 · Icebergs2022-04-10 → 2022-04-11
    Icebergs reported in: a. A64, 66-53S 059-30W
  18. HYDROLANT 1022/22 · Icebergs2022-04-10 → 2022-04-11
    Icebergs reported in: a. B09I, 54-50S 028-27W
  19. HYDROLANT 1014/22 · Icebergs2022-04-09 → 2022-04-10
    Icebergs reported in: a. A64, 66-53S 059-30W
  20. HYDROLANT 1013/22 · Icebergs2022-04-09 → 2022-04-10
    Icebergs reported in: a. B09I, 54-50S 028-24W

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