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 1815/02 · Icebergs2002-08-16 → 2002-08-23
    Very large icebergs reported on 16 aug: a. A-47, nine miles by 14 miles, vicinity 61-54S 053-48W
  2. HYDROLANT 1709/02 · Icebergs2002-08-02 → 2002-08-09
    Very large icebergs reported on 25 jul: a. A-43C, 41 miles by 24 miles, in 61-54S 045-12W
  3. HYDROLANT 1650/02 · Icebergs2002-07-26 → 2002-08-02
    Very large icebergs reported on 25 jul: a. A-43C, 41 miles by 24 miles, in 62-00S 045-24W
  4. HYDROPAC 1146/02 · Exercises2002-06-20 → 2002-06-25
    Hazardous operations 1752Z to 1932Z daily 24 thru 26 jun in area bound by 64-58S 154-08W, 55-10S 146-58W,…
  5. HYDROLANT 1271/02 · Icebergs2002-06-08 → 2002-06-15
    Very large iceberg A-46, four miles by 11 miles, reported in 61-12S 049-24W on 06 jun
  6. HYDROPAC 1016/02 · Icebergs2002-05-31 → 2002-06-07
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-30S 047-24W
  7. HYDROLANT 1214/02 · Icebergs2002-05-31 → 2002-06-07
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-30S 047-24W
  8. HYDROPAC 892/02 · Icebergs2002-05-13 → 2002-05-20
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-30S 047-24W
  9. HYDROLANT 1096/02 · Icebergs2002-05-13 → 2002-05-20
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-30S 047-24W
  10. HYDROPAC 879/02 · Icebergs2002-05-11 → 2002-05-13
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-24S 048-06W
  11. HYDROLANT 1080/02 · Icebergs2002-05-11 → 2002-05-13
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-24S 048-06W
  12. HYDROPAC 844/02 · Icebergs2002-05-06 → 2002-05-11
    Icebergs reported on 05 may: a. A-43C, 41 miles by 24 miles, in 61-24S 048-06W
  13. HYDROLANT 1047/02 · Icebergs2002-05-06 → 2002-05-11
    Icebergs reported on 05 may: a. A-43C, 41 miles by 24 miles, in 61-24S 048-06W
  14. HYDROPAC 790/02 · Icebergs2002-04-27 → 2002-05-03
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-24S 048-06W
  15. HYDROLANT 963/02 · Icebergs2002-04-26 → 2002-05-03
    Icebergs reported: a. A-43C, 41 miles by 24 miles, in 61-24S 048-06W
  16. HYDROPAC 694/02 · Icebergs2002-04-15 → 2002-04-22
    Icebergs reported on 15 apr: a. very large iceberg A-43C, 40 miles by 22 miles, in 61-24S 048-30W
  17. HYDROLANT 873/02 · Icebergs2002-04-15 → 2002-04-22
    Icebergs reported on 15 apr: a. very large iceberg A-43C, 40 miles by 22 miles, in 61-24S 048-30W
  18. HYDROPAC 600/02 · Icebergs2002-03-30 → 2002-04-06
    Icebergs reported on 29 mar: a. very large iceberg A-43C, 40 miles by 22 miles, in 61-42S 049-36W
  19. HYDROLANT 731/02 · Icebergs2002-03-30 → 2002-04-06
    Icebergs reported on 29 mar: a. very large iceberg A-43C, 40 miles by 22 miles, in 61-42S 049-36W
  20. HYDROPAC 492/02 · Icebergs2002-03-18 → 2002-03-25
    Icebergs reported on 17 mar: a. very large iceberg A-43C, 44 miles by 24 miles, in 61-42S 051-06W

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