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 835/09 · Icebergs2009-04-28 → 2009-05-05
    Icebergs reported on 27 apr: a. A55, 64-16S 055-25W
  2. HYDROLANT 783/09 · Icebergs2009-04-28 → 2009-05-05
    Icebergs reported on 27 apr: a. A55, 64-16S 055-25W
  3. HYDROLANT 742/09 · Icebergs2009-04-20 → 2009-04-27
    Icebergs reported on 20 apr: a. A55, 64-20S 055-46W
  4. HYDROPAC 789/09 · Icebergs2009-04-20 → 2009-04-27
    Icebergs reported on 20 apr: a. A55, 64-20S 055-46W
  5. HYDROPAC 744/09 · Icebergs2009-04-14 → 2009-04-21
    Icebergs reported on 13 apr: a. A55, 64-41S 056-35W
  6. HYDROLANT 703/09 · Icebergs2009-04-14 → 2009-04-21
    Icebergs reported on 13 apr: a. A55, 64-41S 056-35W
  7. HYDROPAC 694/09 · Icebergs2009-04-07 → 2009-04-14
    Icebergs reported on 06 apr: a. A55, 64-56S 056-39W
  8. HYDROLANT 658/09 · Icebergs2009-04-07 → 2009-04-14
    Icebergs reported on 06 apr: a. A55, 64-56S 056-39W
  9. HYDROLANT 577/09 · Icebergs2009-03-24 → 2009-03-31
    Icebergs reported on 23 mar: a. A55, 65-06S 057-39W
  10. HYDROPAC 613/09 · Icebergs2009-03-24 → 2009-03-31
    Icebergs reported on 23 mar: a. A55, 65-06S 057-39W
  11. HYDROLANT 530/09 · Icebergs2009-03-17 → 2009-03-24
    Icebergs reported on 17 mar: a. A43F1 46-42S 020-01W
  12. HYDROPAC 560/09 · Icebergs2009-03-17 → 2009-03-24
    Icebergs reported on 17 mar: a. A43F1 46-42S 020-01W
  13. HYDROPAC 518/09 · Icebergs2009-03-11 → 2009-03-17
    Icebergs reported on 09 mar: a. A43K, 52-21S 014-34W
  14. HYDROLANT 490/09 · Icebergs2009-03-11 → 2009-03-17
    Icebergs reported on 09 mar: a. A43K, 52-21S 014-34W
  15. HYDROPAC 336/08 · Icebergs2008-02-22 → 2008-02-27
    Icebergs reported on 18 feb: a. A43F, 60-30S 052-18W
  16. HYDROLANT 341/08 · Icebergs2008-02-22 → 2008-02-27
    Icebergs reported on 18 feb: a. A43F, 60-30S 052-18W
  17. HYDROPAC 327/08 · Icebergs2008-02-21 → 2008-02-22
    Icebergs reported on 18 feb: a. A43F, 60-30S 052-18W
  18. HYDROLANT 337/08 · Icebergs2008-02-21 → 2008-02-22
    Icebergs reported on 18 feb: a. A43F, 60-30S 052-18W
  19. HYDROPAC 267/08 · Icebergs2008-02-12 → 2008-02-19
    Icebergs reported on 12 feb: a. A43F, 61-00S 051-25W
  20. HYDROLANT 298/08 · Icebergs2008-02-12 → 2008-02-19
    Icebergs reported on 12 feb: a. A43F, 61-00S 051-25W

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