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. HYDROPAC 2051/07 · Other2007-11-23 → 2007-11-23
    M/V explorer flooding vicinity 62-24S 057-15W at 230334Z nov
  2. HYDROPAC 1122/07 · Icebergs2007-06-27 → 2007-07-04
    Icebergs reported in: a. A53A, 61-51S 053-35W
  3. HYDROLANT 1117/07 · Icebergs2007-06-27 → 2007-07-04
    Icebergs reported in: a. A53A, 61-51S 053-35W
  4. HYDROLANT 1078/07 · Icebergs2007-06-21 → 2007-06-27
    Icebergs reported on 20 jun: a. A-53A, 62-03S 054-30W
  5. HYDROPAC 1028/07 · Other2007-06-12 → 2007-06-14
    M/V rosa trapped in ice in 60-10S 047-36W
  6. HYDROLANT 1005/07 · Other2007-06-12 → 2007-06-14
    M/V rosa trapped in ice in 60-10S 047-36W
  7. HYDROLANT 768/07 · Icebergs2007-05-08 → 2007-05-14
    Icebergs reported on 07 may in area bound by 66-06S 067-00W, 65-30S 066-00W, 65-06S 064-30W, 64-00S 063-00W,…
  8. HYDROPAC 515/07 · Icebergs2007-03-21 → 2007-03-29
    Icebergs reported vicinity 61-39.05S 051-59.20W
  9. HYDROLANT 450/07 · Icebergs2007-03-21 → 2007-03-29
    Icebergs reported vicinity 61-39.05S 051-59.20W
  10. HYDROLANT 167/07 · Icebergs2007-01-29 → 2007-02-05
    Icebergs reported 29 jan in: a. D-18, 68-15S 043-32W
  11. HYDROPAC 201/07 · Icebergs2007-01-29 → 2007-02-05
    Icebergs reported 29 jan in: a. D-18, 68-15S 043-32W
  12. HYDROPAC 193/07 · Icebergs2007-01-29 → 2007-02-04
    Icebergs reported on 28 jan: a. 61-40S 051-39W
  13. HYDROLANT 161/07 · Icebergs2007-01-29 → 2007-02-04
    Icebergs reported on 28 jan: a. 61-40S 051-39W
  14. HYDROPAC 2551/06 · Other2006-12-28 → 2007-02-08
    M/V tifon reports crewman requiring medical assistance in 64-50S 038-30E at 280729Z dec
  15. HYDROPAC 2526/06 · Icebergs2006-12-24 → 2006-12-30
    Icebergs reported in 61-40S 051-39W on 23 dec
  16. HYDROLANT 2294/06 · Icebergs2006-12-24 → 2006-12-30
    Icebergs reported vicinity 61-40S 051-39W on 23 dec
  17. HYDROPAC 2498/06 · Wrecks2006-12-21 → 2008-02-03
    Submerged obstruction vicinity 64-40.5S 062-38.3W
  18. HYDROPAC 2373/06 · Icebergs2006-12-06 → 2006-12-13
    Icebergs reported: a. A-22A, 57-35S 040-33W
  19. HYDROLANT 2181/06 · Icebergs2006-12-06 → 2006-12-13
    Icebergs reported: a. A-22A, 57-35S 040-33W
  20. HYDROLANT 2150/06 · Icebergs2006-12-01 → 2006-12-06
    Icebergs reported in: a. A-22A, 57-27S 041-56W

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