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 1225/16 · Icebergs2016-05-24 → 2016-05-27
    Icebergs reported in: a. 61-28S 054-25W
  2. HYDROLANT 1162/16 · Icebergs2016-05-17 → 2016-05-20
    Icebergs reported in: a. 61-43S 055-06W
  3. HYDROLANT 1116/16 · Icebergs2016-05-11 → 2016-05-14
    Icebergs reported in: a. 62-21S 055-22W
  4. HYDROLANT 1079/16 · Icebergs2016-05-06 → 2016-05-09
    Icebergs reported in: a. 62-21S 054-58W
  5. HYDROLANT 723/16 · Icebergs2016-03-25 → 2016-03-28
    Ice
  6. HYDROLANT 398/16 · Icebergs2016-02-16 → 2016-02-19
    Ice
  7. HYDROPAC 433/16 · Icebergs2016-02-16 → 2016-02-19
    Icebergs reported on 16 feb: a. B30, 74-00S 131-19W
  8. HYDROPAC 297/16 · Missiles2016-02-03 → 2016-02-08
    Space debris
  9. HYDROLANT 230/16 · Surveys2016-01-27 → 2016-02-09
    Underwater operations in progress until 08 feb by M/V tango towing 250 meter long cable vicinity of…
  10. HYDROPAC 4102/15 · Nav aids2015-12-16 → 2015-12-20
    Cape lloyd light 61-07.8S 054-00.1W destroyed
  11. HYDROPAC 4067/15 · Icebergs2015-12-13 → 2015-12-16
    Icebergs reported in: a. 62-12.6S 063-54.6W
  12. HYDROLANT 3001/15 · Wrecks2015-12-04 → 2015-12-04
    Vessel tarka aground in 64-41.21S 062-38.38W
  13. HYDROLANT 2959/15 · Icebergs2015-11-30 → 2015-12-03
    Icebergs in: a. A56, 58-45S 044-04W
  14. HYDROLANT 2683/15 · Nav aids2015-10-31 → 2016-03-06
    Nelson island RACON 62-18.4S 059-12.8W inoperative
  15. HYDROLANT 269/15 · Surveys2015-01-31 → 2015-02-02
    Underwater operations in progress until further notice by M/V tango towing equipment between elephant island…
  16. HYDROLANT 26/15 · Other2015-01-04 → 2015-01-07
    Four meter long fuel tank adrift in 61-28.6S 063-47.7W
  17. HYDROLANT 3179/14 · Icebergs2014-12-31 → 2015-01-03
    Iceberg reported vicinity 60-22S 061-08W
  18. HYDROLANT 3135/14 · Icebergs2014-12-25 → 2014-12-28
    Iceberg reported vicinitiy 60-18S 062-02W
  19. HYDROPAC 3531/14 · Missiles2014-11-26 → 2014-12-02
    Space debris
  20. HYDROLANT 2675/14 · Icebergs2014-11-06 → 2014-11-09
    Icebergs reported on 06 nov: a. B15K, 66-58S 059-50W

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