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 2003/05 · Nav aids2005-11-29 → 2006-02-15
    RACON at barrios island light 63-19.1S 057-57.2W inoperative
  2. HYDROPAC 2002/05 · Nav aids2005-11-28 → 2006-03-13
    RACON at nelson island light 62-18.4S 059-12.8W inoperative
  3. HYDROPAC 1877/05 · Icebergs2005-11-09 → 2005-11-15
    Iceberg reported vicinity 61-40S 053-40W
  4. HYDROPAC 1753/05 · Icebergs2005-10-18 → 2005-10-25
    Iceberg A-52 reported in 61-42S 053-44W
  5. HYDROPAC 1628/05 · Icebergs2005-09-30 → 2005-10-07
    Icebergs sighted in: a. A-43E, in 56-30S 031-51W
  6. HYDROLANT 1785/05 · Icebergs2005-09-30 → 2005-10-07
    Icebergs sighted in: a. A-43E, in 56-30S 031-51W
  7. HYDROLANT 1680/05 · Icebergs2005-09-15 → 2005-09-22
    Icebergs sighted in: a. 56-30S 032-30W
  8. HYDROPAC 1499/05 · Icebergs2005-09-15 → 2005-09-22
    Icebergs sighted in: a. 56-30S 032-30W
  9. HYDROPAC 1464/05 · Icebergs2005-09-09 → 2005-09-15
    Iceberg sighted in: a. 57-01S 033-21W
  10. HYDROLANT 1637/05 · Icebergs2005-09-08 → 2005-09-15
    Iceberg sighted in: a. 57-01S 033-21W
  11. HYDROPAC 1413/05 · Icebergs2005-08-31 → 2005-09-06
    Large icebergs reported on 30 aug vicinity: a. 57-05S 034-16W
  12. HYDROLANT 1588/05 · Icebergs2005-08-31 → 2005-09-06
    Large icebergs reported on 30 aug vicinity: a. 57-05S 034-16W
  13. HYDROLANT 1414/05 · Icebergs2005-08-04 → 2005-08-11
    Icebergs reported on 04 aug vicinity: a. 57-00S 037-01W
  14. HYDROPAC 1258/05 · Icebergs2005-08-04 → 2005-08-11
    Icebergs reported on 04 aug vicinity: a. 57-00S 037-01W
  15. HYDROPAC 1121/05 · Icebergs2005-07-13 → 2005-07-19
    Icebergs sighted in: a. 66-20S 059-51W
  16. HYDROLANT 1285/05 · Icebergs2005-07-13 → 2005-07-19
    Iceberg sighted in: a. 57-59S 043-07W
  17. HYDROPAC 1057/05 · Icebergs2005-07-05 → 2005-07-12
    Icebergs reported in: a. 57-59S 043-07W
  18. HYDROLANT 1248/05 · Icebergs2005-07-05 → 2005-07-12
    Icebergs reported in: a. 57-59S 043-07W
  19. HYDROPAC 996/05 · Icebergs2005-06-24 → 2005-07-01
    Icebergs reported in: a. 58-08S 043-15W
  20. HYDROLANT 1184/05 · Icebergs2005-06-24 → 2005-07-01
    Icebergs reported in: a. 58-08S 043-15W

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