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 2310/06 · Icebergs2006-11-28 → 2006-12-04
    Icebergs reported in: a. A-22A, 57-03S 042-37W
  2. HYDROLANT 2130/06 · Icebergs2006-11-28 → 2006-12-04
    Icebergs reported in: a. A-22A, 57-03S 042-37W
  3. HYDROPAC 2258/06 · Icebergs2006-11-20 → 2006-11-27
    Icebergs reported in: a. A-22A, 57-06S 044-01W
  4. HYDROLANT 2099/06 · Icebergs2006-11-20 → 2006-11-27
    Icebergs reported in: a. A-22A, 57-06S 044-01W
  5. HYDROPAC 1592/06 · Other2006-08-20 → 2006-08-23
    Mariners are advised that an earthquake magnitude 7.1 has occurred vicinity 61-00S 034-05W at 200342Z aug
  6. HYDROLANT 1521/06 · Other2006-08-20 → 2006-08-23
    Mariners are advised that an earthquake magnitude 7.1 has occurred vicinity 61-00S 034-05W at 200342Z aug
  7. HYDROPAC 1425/06 · Icebergs2006-07-29 → 2006-08-02
    Icebergs sighted on 25 jul: a. A22-A, 60-04S 051-14W
  8. HYDROLANT 1405/06 · Icebergs2006-07-29 → 2006-08-02
    Icebergs sighted on 25 jul: a. A22-A, 60-04S 051-14W
  9. HYDROPAC 1342/06 · Icebergs2006-07-17 → 2006-07-24
    Very large icebergs reported on 17 jul: a. A-22A, 60-27S 052-08W
  10. HYDROLANT 1342/06 · Icebergs2006-07-17 → 2006-07-24
    Very large icebergs reported on 17 jul: a. A-22A, 60-27S 052-08W
  11. HYDROPAC 1304/06 · Icebergs2006-07-12 → 2006-07-17
    Very large icebergs reported on 10 jul: a. A-22A, 60-41S 052-21W
  12. HYDROLANT 1291/06 · Icebergs2006-07-12 → 2006-07-17
    Very large icebergs reported on 10 jul: a. A-22A, 60-41S 052-21W
  13. HYDROPAC 1262/06 · Icebergs2006-07-04 → 2006-07-11
    Icebergs sighted on 04 jul: a. A22-A, 60-40S 052-23W
  14. HYDROLANT 1253/06 · Icebergs2006-07-04 → 2006-07-11
    Icebergs sighted on 04 jul: a. A22-A, 60-40S 052-23W
  15. HYDROPAC 1217/06 · Icebergs2006-06-28 → 2006-07-05
    Icebergs detected on 26 jun: a. 60-38S 052-18W
  16. HYDROPAC 1145/06 · Icebergs2006-06-21 → 2006-06-27
    Icebergs detected on 20 jun: a. 60-27S 051-57W
  17. HYDROPAC 1092/06 · Icebergs2006-06-14 → 2006-06-19
    Icebergs reported on 12 jun: a. A-22A 60-39S 052-22W
  18. HYDROPAC 1030/06 · Icebergs2006-06-06 → 2006-06-13
    Icebergs reported a. A-22A 60-39S 052-22W
  19. HYDROPAC 1000/06 · Icebergs2006-05-30 → 2006-06-06
    Icebergs reported a. A-22A 60-39S 052-22W
  20. HYDROPAC 944/06 · Icebergs2006-05-23 → 2006-05-30
    Icebergs reported: a. A-22A 60-40S 052-24W

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