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 168/08 · Other2008-01-28 → 2008-01-28
    F/V tronio reports crewman with amputated thumb requiring medical assistance in 64-36S 134-07E at 280420Z jan
  2. HYDROPAC 86/08 · Icebergs2008-01-16 → 2008-01-23
    Icebergs reported on 15 jan: a. A-43F, 62-00S 053-00W
  3. HYDROLANT 125/08 · Icebergs2008-01-16 → 2008-01-23
    Icebergs reported on 15 jan: a. A-43F, 62-00S 053-00W
  4. HYDROPAC 34/08 · Icebergs2008-01-08 → 2008-01-15
    Icebergs reported on 07 jan: a. A-43F, 63-18S 053-12W
  5. HYDROLANT 59/08 · Icebergs2008-01-08 → 2008-01-15
    Icebergs reported on 07 jan: a. A-43F, 63-18S 053-12W
  6. HYDROPAC 32/08 · Other2008-01-07 → 2008-02-23
    F/V gold dragon reports crewman with partial amputation in 60-53S 083-25E at 070830Z jan
  7. HYDROPAC 21/08 · Icebergs2008-01-06 → 2008-02-03
    Icebergs reported on 05 jan: a. A-53A, 57-18S 042-24W
  8. HYDROLANT 46/08 · Icebergs2008-01-06 → 2008-01-13
    Icebergs reported on 05 jan: a. A-53A, 57-18S 042-24W
  9. HYDROPAC 18/08 · Icebergs2008-01-04 → 2008-01-11
    Very large icebergs reported on 03 jan: a. B-17A, 65-28S 141-15E
  10. HYDROPAC 2292/07 · Icebergs2007-12-30 → 2008-01-06
    Icebergs reported on 30 dec: a. A-53A, 57-00S 043-06W
  11. HYDROLANT 2171/07 · Icebergs2007-12-30 → 2007-01-06
    Icebergs reported on 30 dec: a. A-53A, 57-00S 043-06W
  12. HYDROPAC 2264/07 · Icebergs2007-12-27 → 2007-12-30
    Icebergs reported on 26 dec: a. A-53A, 57-06S 043-55W
  13. HYDROLANT 2157/07 · Icebergs2007-12-27 → 2007-12-30
    Icebergs reported on 26 dec: a. A-53A, 57-06S 043-55W
  14. HYDROPAC 2228/07 · Icebergs2007-12-18 → 2007-12-25
    Icebergs reported: a. B-15A, 61-30S 156-47W on 13 dec
  15. HYDROLANT 2121/07 · Icebergs2007-12-18 → 2007-12-25
    Icebergs reported: a. B-15D, 61-14S 054-25W on 13 dec
  16. HYDROPAC 2191/07 · Icebergs2007-12-13 → 2007-12-20
    Icebergs reported on 11 dec: a. A-53A: 57-45S 044-52W
  17. HYDROLANT 2080/07 · Icebergs2007-12-13 → 2007-12-20
    Icebergs reported on 11 dec: a. A-53A: 57-45S 044-52W
  18. HYDROPAC 2110/07 · Icebergs2007-11-28 → 2007-12-05
    Icebergs reported on 28 nov: a. A-53A, 58-29S 045-13W
  19. HYDROLANT 1976/07 · Icebergs2007-11-28 → 2007-12-05
    Icebergs reported on 28 nov: a. A-53A, 58-29S 045-13W
  20. HYDROPAC 2069/07 · Wrecks2007-11-25 → 2008-02-03
    Nga chart 29105 (5TH ed)

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