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 208/12 · Icebergs2012-01-25 → 2012-01-28
    Iceberg C19 c 63-14S 051-34W reported on 24 jan
  2. HYDROPAC 160/12 · Icebergs2012-01-19 → 2012-01-22
    Iceberg C19 c 63-24S 051-44W reported on 18 jan
  3. HYDROPAC 3559/11 · Icebergs2011-12-21 → 2011-12-24
    Iceberg C19 c 63-55S 052-32W reported on 20 dec
  4. HYDROPAC 3507/11 · Other2011-12-16 → 2011-12-24
    F/V sparta in danger of capsizing in 74-59S 156-35W at 151600Z dec
  5. HYDROPAC 3481/11 · Icebergs2011-12-13 → 2011-12-16
    Iceberg C19 c 64-02S 053-15W reported 13 dec
  6. HYDROPAC 3235/11 · Missiles2011-11-17 → 2011-11-30
    Hazardous operations 0800Z to 1000Z daily 22 thru 30 nov in area bound by 57-28.8S 126-01.2W, 60-23.4S…
  7. HYDROPAC 2702/11 · Missiles2011-09-26 → 2011-10-07
    Hazardous operations 1950Z to 2130Z daily 01 thru 07 oct in area bound by 57-28.8S 126-01.2W 60-23.4S…
  8. HYDROPAC 2331/11 · Missiles2011-08-19 → 2011-08-31
    Hazardous operations 2230Z to 2359Z daily 24 thru 30 aug in area bound by 57-28.8S 126-01.2W, 60-23.4S…
  9. HYDROPAC 1352/11 · Wrecks2011-05-03 → 2011-05-07
    Nga chart 29101 (6TH ed)
  10. HYDROPAC 642/11 · Wrecks2011-02-28 → 2011-03-05
    Nga chart 29002 (9TH ed)
  11. HYDROPAC 560/11 · Missiles2011-02-21 → 2011-02-28
    Hazardous operations 0300Z to 0500Z daily 24 thru 28 feb in area bound by 59-43.6S 165-49.2E, 57-28.8S…
  12. HYDROPAC 2959/10 · Icebergs2010-12-29 → 2011-01-01
    Icebergs reported on 27 dec: a. 61-06S 020-00W
  13. HYDROPAC 2874/10 · Missiles2010-12-23 → 2010-12-31
    Hazardous operations 1455Z to 1620Z daily 27 thru 31 dec in area bound by 59-43.6S 165-49.2E, 57-28.8S…
  14. HYDROLANT 2441/10 · Icebergs2010-12-17 → 2010-12-20
    Iceberg detected in 61-40S 041-30W on 15 dec
  15. HYDROPAC 2815/10 · Icebergs2010-12-17 → 2010-12-20
    Iceberg detected in 61-40S 041-30W on 15 dec
  16. HYDROPAC 1113/10 · Icebergs2010-05-29 → 2010-06-05
    Iceberg B-15I, sighted in 62-26S 171-57E
  17. HYDROPAC 439/10 · Icebergs2010-03-06 → 2010-03-09
    Icebergs reported in: a. 62-49-30S 067-00-00W
  18. HYDROPAC 288/10 · Icebergs2010-02-13 → 2010-02-16
    Iceberg reported in 62-18.9S 059-13.3W
  19. HYDROPAC 205/10 · Icebergs2010-02-02 → 2010-02-05
    Iceberg A55, reported in 64-08S 055-28W on 01 feb
  20. HYDROPAC 2300/09 · Icebergs2009-12-08 → 2009-12-11
    Iceberg reported in 60-08S 062-05W on 03 dec

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