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 1468/19 · Icebergs2019-05-14 → 2019-05-15
    Icebergs reported in: a. B09F, 56-47S 041-53W
  2. HYDROLANT 1459/19 · Icebergs2019-05-13 → 2019-05-14
    Icebergs reported in: a. B09F, 56-47S 041-53W
  3. HYDROLANT 1452/19 · Icebergs2019-05-12 → 2019-05-13
    Icebergs reported in: a. B09F, 56-47S 041-53W
  4. HYDROLANT 1445/19 · Icebergs2019-05-11 → 2019-05-12
    Icebergs reported in: a. B09F, 56-47S 041-53W
  5. HYDROLANT 1435/19 · Icebergs2019-05-10 → 2019-05-11
    Icebergs reported in: a. B09F, 56-47S 041-53W
  6. HYDROLANT 1399/19 · Icebergs2019-05-06 → 2019-05-07
    Icebergs reported in: a. B09F, 56-47S 041-53W
  7. HYDROLANT 1392/19 · Icebergs2019-05-05 → 2019-05-06
    Icebergs reported in: a. B09F, 60-22S 053-49W
  8. HYDROLANT 1387/19 · Icebergs2019-05-04 → 2019-05-05
    Icebergs reported in: a. B09F, 60-22S 053-49W
  9. HYDROLANT 1364/19 · Icebergs2019-05-02 → 2019-05-03
    Icebergs reported in: a. B09F, 56-52S 042-32W
  10. HYDROLANT 1359/19 · Icebergs2019-05-01 → 2019-05-02
    Icebergs reported in: a. B09F, 60-22S 053-49W
  11. HYDROLANT 1343/19 · Icebergs2019-04-30 → 2019-05-01
    Icebergs reported in: a. B09F, 56-50S 042-20W
  12. HYDROLANT 1326/19 · Icebergs2019-04-29 → 2019-04-30
    Icebergs reported in: a. B09F, 56-52S 042-32W
  13. HYDROLANT 1308/19 · Icebergs2019-04-28 → 2019-04-29
    Icebergs reported in: a. B09F, 56-52S 042-32W
  14. HYDROLANT 1301/19 · Icebergs2019-04-27 → 2019-04-28
    Icebergs reported in: a. B09F, 56-52S 042-32W
  15. HYDROLANT 1292/19 · Icebergs2019-04-26 → 2019-04-27
    Icebergs reported in: a. B09F, 56-52S 042-32W
  16. HYDROLANT 1268/19 · Icebergs2019-04-24 → 2019-04-25
    Icebergs reported in: a. B09F, 60-22S 053-49W
  17. HYDROLANT 1258/19 · Icebergs2019-04-23 → 2019-04-24
    Icebergs reported in: a. B09F, 56-52S 042-32W
  18. HYDROLANT 1243/19 · Icebergs2019-04-21 → 2019-04-22
    Icebergs reported in: a. B09F, 56-52S 042-32W
  19. HYDROLANT 1238/19 · Icebergs2019-04-20 → 2019-04-21
    Icebergs reported in: a. B09F, 56-52S 042-32W
  20. HYDROLANT 1220/19 · Icebergs2019-04-18 → 2019-04-19
    Icebergs reported in: a. B09F, 56-40S 044-19W

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