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 705/14 · Surveys2014-03-10 → 2014-03-11
    Oceanographic operations in progress until further notice by M/V puerto deseado in 62-00.5S 042-29.6W
  2. HYDROLANT 696/14 · Surveys2014-03-08 → 2014-03-10
    Oceanographic operations in progress until further notice by M/V puerto deseado in 60-49.5S 044-43.4W
  3. HYDROLANT 687/14 · Surveys2014-03-07 → 2014-03-08
    Oceanographic operations in progress until further notice by M/V puerto deseado in 60-44.5S 044-43.4W
  4. HYDROLANT 674/14 · Surveys2014-03-06 → 2014-03-07
    Oceanographic operations in progress until further notice by M/V puerto deseado in 60-41.2S 046-06.5W 2.…
  5. HYDROLANT 662/14 · Surveys2014-03-05 → 2014-03-06
    Oceanographic operations in progress until further notice by M/V puerto deseado in 61-02.6S 044-48.5W
  6. HYDROLANT 650/14 · Surveys2014-03-04 → 2014-03-05
    Oceanographic operations in progress until further notice by M/V puerto deseado in 61-46.8S 046-44.5W
  7. HYDROLANT 636/14 · Surveys2014-03-02 → 2014-03-04
    Oceanographic operations in progress until further notice by M/V puerto deseado in 60-44.6S 044-43.3W
  8. HYDROLANT 625/14 · Surveys2014-03-01 → 2014-03-02
    Oceanographic operations in progress until further notice by M/V puerto deseado in 60-51.0S 044-18.9W
  9. HYDROLANT 620/14 · Surveys2014-02-28 → 2014-03-01
    Oceanographic operations in progress until further notice by M/V puerto deseado in 61-56.2S 043-15.7W
  10. HYDROLANT 607/14 · Surveys2014-02-27 → 2014-02-28
    Oceanographic operations in progress until further notice by M/V puerto deseado in 62-23.4S 043-53.3W
  11. HYDROLANT 599/14 · Surveys2014-02-26 → 2014-02-27
    Oceanographic operations in progress until further notice by M/V puerto deseado in 62-57.2S 046-36.8W
  12. HYDROLANT 591/14 · Surveys2014-02-25 → 2014-02-26
    Oceanographic operations in progress until further notice by M/V puerto deseado in 63-03.20S 044-31.05W
  13. HYDROLANT 569/14 · Surveys2014-02-24 → 2014-02-25
    Oceanographic operations in progress until further notice by M/V puerto deseado vicinity 60-44.5S 044-42.6W
  14. HYDROPAC 529/14 · Icebergs2014-02-23 → 2014-02-26
    Iceberg reported vicinity 62-16.1S 171-19.3E at 230700Z feb
  15. HYDROLANT 563/14 · Surveys2014-02-23 → 2014-02-24
    Oceanographic operations in progress until further notice by M/V puerto deseado vicinity 60-26.9S 044-35.6W
  16. HYDROLANT 551/14 · Icebergs2014-02-22 → 2014-02-25
    Icebergs reported at 211200Z feb in: a. B17A, 63-11S 051-09W
  17. HYDROLANT 528/14 · Surveys2014-02-21 → 2014-02-23
    Oceanographic operations in progress until further notice by M/V puerto deseado vicinity 60-49.0S 044-21.6W
  18. HYDROLANT 514/14 · Surveys2014-02-19 → 2014-02-21
    Oceanographic operations in progress until further notice by M/V puerto deseado vicinity 60-15.6S 047-21.6W
  19. HYDROPAC 484/14 · Icebergs2014-02-18 → 2014-02-21
    Icebergs reported in: a. B17A, 63-13S 050-47W
  20. HYDROPAC 483/14 · Surveys2014-02-18 → 2014-02-19
    Oceanographic operations in progress until further notice by M/V puerto deseado vicinity 60-08.6S 044-47.6W

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