Southern Ocean

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

in force
3
last 12 months
4
since 1999
3,132
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

Icebergs2,99195%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 1212/21 · Icebergs2021-05-02 → 2021-05-03
    Icebergs reported in: a. A63, 69-11S 056-49W
  2. HYDROLANT 1204/21 · Icebergs2021-05-01 → 2021-05-02
    Icebergs reported in: a. A63, 69-11S 056-49W
  3. HYDROLANT 1198/21 · Icebergs2021-04-30 → 2021-05-01
    Icebergs reported in: a. A63, 69-11S 056-49W
  4. HYDROLANT 1174/21 · Icebergs2021-04-28 → 2021-04-29
    Icebergs reported in: a. A63, 69-11S 056-49W
  5. HYDROLANT 1167/21 · Icebergs2021-04-27 → 2021-04-28
    Icebergs reported in: a. A63, 69-11S 056-49W
  6. HYDROLANT 1149/21 · Icebergs2021-04-26 → 2021-04-27
    Icebergs reported in: a. A63, 69-11S 056-49W
  7. HYDROLANT 1143/21 · Icebergs2021-04-25 → 2021-04-26
    Icebergs reported in: a. A63, 69-11S 056-49W
  8. HYDROLANT 1136/21 · Icebergs2021-04-24 → 2021-04-25
    Icebergs reported in: a. A63, 69-11S 057-05W
  9. HYDROLANT 1129/21 · Icebergs2021-04-23 → 2021-04-24
    Icebergs reported in: a. A63, 69-11S 057-05W
  10. HYDROLANT 1113/21 · Icebergs2021-04-22 → 2021-04-23
    Icebergs reported in: a. A63, 69-11S 057-05W
  11. HYDROLANT 1106/21 · Icebergs2021-04-21 → 2021-04-22
    Icebergs reported in: a. A63, 69-11S 057-05W
  12. HYDROLANT 1093/21 · Icebergs2021-04-20 → 2021-04-21
    Icebergs reported in: a. A63, 69-11S 057-05W
  13. HYDROLANT 1081/21 · Icebergs2021-04-19 → 2021-04-20
    Icebergs reported in: a. A63, 69-27S 056-47W
  14. HYDROLANT 1057/21 · Icebergs2021-04-18 → 2021-04-19
    Icebergs reported in: a. A63, 69-27S 056-47W
  15. HYDROLANT 1050/21 · Icebergs2021-04-17 → 2021-04-18
    Icebergs reported in: a. A63, 69-27S 056-47W
  16. HYDROLANT 1042/21 · Icebergs2021-04-16 → 2021-04-17
    Icebergs reported in: a. A63, 69-27S 056-47W
  17. HYDROLANT 1028/21 · Icebergs2021-04-15 → 2021-04-16
    Icebergs reported in: a. A63, 69-27S 056-47W
  18. HYDROLANT 1021/21 · Icebergs2021-04-14 → 2021-04-15
    Icebergs reported in: a. A63, 69-27S 056-47W
  19. HYDROLANT 1009/21 · Icebergs2021-04-13 → 2021-04-14
    Icebergs reported in: a. A63, 69-27S 056-47W
  20. HYDROLANT 999/21 · Icebergs2021-04-12 → 2021-04-13
    Icebergs reported in: a. A63, 69-37S 056-42W

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