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 1520/09 · Icebergs2009-08-25 → 2009-09-01
    Icebergs reported on 25 aug: a. C-18A, 60-13S 045-04W
  2. HYDROLANT 1611/09 · Icebergs2009-08-25 → 2009-09-01
    Icebergs reported on 25 aug: a. C-18A, 60-13S 045-04W
  3. HYDROPAC 1385/09 · Icebergs2009-08-04 → 2009-08-11
    Icebergs reported on 03 aug: a. C-18A, 60-37S 043-04W
  4. HYDROLANT 1463/09 · Icebergs2009-08-04 → 2009-08-11
    Icebergs reported on 03 aug: a. C-18A, 60-37S 043-04W
  5. HYDROPAC 1343/09 · Icebergs2009-07-28 → 2009-08-04
    Icebergs reported on 27 jul: a. C-18A 61-46S 044-24W
  6. HYDROLANT 1402/09 · Icebergs2009-07-28 → 2009-08-04
    Icebergs reported on 27 jul: a. C-18A 61-46S 044-24W
  7. HYDROPAC 1237/09 · Icebergs2009-07-08 → 2009-07-15
    Icebergs reported on 06 jul: a. A55, 63-58S 055-00W
  8. HYDROPAC 1228/09 · Icebergs2009-07-06 → 2009-07-08
    Icebergs reported on 06 jul: a. A55, 63-58S 055-00W
  9. HYDROLANT 1110/09 · Icebergs2009-06-17 → 2009-06-23
    Icebergs reported on 16 jun: a. C-18A 61-56S 041-49W
  10. HYDROPAC 1122/09 · Icebergs2009-06-16 → 2009-06-23
    Icebergs reported on 16 jun: a. C-18A 61-56S 041-49W
  11. HYDROPAC 1073/09 · Icebergs2009-06-08 → 2009-06-15
    Icebergs reported on 08 jun: a. C-18A 62-29S 042-21W
  12. HYDROLANT 1052/09 · Icebergs2009-06-08 → 2009-06-15
    Icebergs reported on 08 jun: a. C-18A 62-29S 042-21W
  13. HYDROPAC 1031/09 · Icebergs2009-06-02 → 2009-06-09
    Icebergs reported on 01 jun: a. A55, 64-00S 055-56W
  14. HYDROLANT 1007/09 · Icebergs2009-06-02 → 2009-06-09
    Icebergs reported on 01 jun: a. A55, 64-00S 055-56W
  15. HYDROPAC 964/09 · Icebergs2009-05-19 → 2009-05-26
    Icebergs reported on 18 may: a. A55, 64-00S 055-56W
  16. HYDROLANT 918/09 · Icebergs2009-05-19 → 2009-05-26
    Icebergs reported on 18 may: a. A55, 64-00S 055-56W
  17. HYDROPAC 912/09 · Icebergs2009-05-12 → 2009-05-19
    Icebergs reported on 11 may: a. A55, 64-00S 055-56W
  18. HYDROLANT 870/09 · Icebergs2009-05-12 → 2009-05-19
    Icebergs reported on 11 may: a. A55, 64-00S 055-56W
  19. HYDROPAC 878/09 · Icebergs2009-05-05 → 2009-05-12
    Icebergs reported on 04 may: a. A55, 64-01S 055-51W
  20. HYDROLANT 828/09 · Icebergs2009-05-05 → 2009-05-12
    Icebergs reported on 04 may: a. A55, 64-01S 055-51W

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