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 1381/21 · Icebergs2021-05-23 → 2021-05-24
    Icebergs reported in: a. A63, 68-06S 056-17W
  2. HYDROLANT 1377/21 · Icebergs2021-05-22 → 2021-05-23
    Icebergs reported in: a. A63, 68-06S 056-17W
  3. HYDROLANT 1372/21 · Icebergs2021-05-21 → 2021-05-22
    Icebergs reported in: a. A63, 68-06S 056-17W
  4. HYDROLANT 1363/21 · Icebergs2021-05-20 → 2021-05-21
    Icebergs reported in: a. A63, 68-06S 056-17W
  5. HYDROLANT 1357/21 · Icebergs2021-05-19 → 2021-05-20
    Icebergs reported in: a. A63, 68-06S 056-17W
  6. HYDROLANT 1344/21 · Icebergs2021-05-18 → 2021-05-19
    Icebergs reported in: a. A63, 68-06S 056-17W
  7. HYDROLANT 1336/21 · Icebergs2021-05-17 → 2021-05-18
    Icebergs reported in: a. A63, 68-02S 057-02W
  8. HYDROLANT 1327/21 · Icebergs2021-05-16 → 2021-05-17
    Icebergs reported in: a. A63, 68-02S 057-02W
  9. HYDROLANT 1321/21 · Icebergs2021-05-15 → 2021-05-16
    Icebergs reported in: a. A63, 68-02S 057-02W
  10. HYDROLANT 1313/21 · Icebergs2021-05-14 → 2021-05-15
    Icebergs reported in: a. A63, 68-02S 057-02W
  11. HYDROLANT 1304/21 · Icebergs2021-05-13 → 2021-05-14
    Icebergs reported in: a. A63, 68-02S 057-02W
  12. HYDROLANT 1296/21 · Icebergs2021-05-12 → 2021-05-13
    Icebergs reported in: a. A63, 68-02S 057-02W
  13. HYDROLANT 1290/21 · Icebergs2021-05-11 → 2021-05-12
    Icebergs reported in: a. A63, 68-02S 057-02W
  14. HYDROLANT 1273/21 · Icebergs2021-05-09 → 2021-05-10
    Icebergs reported in: a. A63, 68-44S 057-13W
  15. HYDROLANT 1265/21 · Icebergs2021-05-08 → 2021-05-09
    Icebergs reported in: a. A63, 68-44S 057-13W
  16. HYDROLANT 1258/21 · Icebergs2021-05-07 → 2021-05-08
    Icebergs reported in: a. A63, 68-44S 057-13W
  17. HYDROLANT 1252/21 · Icebergs2021-05-06 → 2021-05-07
    Icebergs reported in: a. A63, 68-44S 057-13W
  18. HYDROLANT 1245/21 · Icebergs2021-05-05 → 2021-05-06
    Icebergs reported in: a. A63, 69-11S 056-49W
  19. HYDROLANT 1231/21 · Icebergs2021-05-04 → 2021-05-05
    Icebergs reported in: a. A63, 69-11S 056-49W
  20. HYDROLANT 1220/21 · Icebergs2021-05-03 → 2021-05-04
    Icebergs reported in: a. A63, 69-11S 056-49W

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