Southern Ocean
IHO sea area 67 · -180° to 180° E, -86° to -60° N
- in force
- 3
- last 12 months
- 4
- since 1999
- 3,132
- categories
- 9
In force now · 3
- HYDROLANT 1570/26 · Icebergs2026-08-14Icebergs reported in the Scotia Sea and Antarctica at several coordinates; message cancels August 15, 2026, 06:32 UTC.
- HYDROPAC 2289/26 · Missiles2026-08-10Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
- HYDROLANT 1279/26 · Icebergs2026-06-30Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.
Longest in force
- HYDROLANT 1279/26 · Icebergs2026-06-30Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.
- HYDROPAC 2289/26 · Missiles2026-08-10Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
- HYDROLANT 1570/26 · Icebergs2026-08-14Icebergs 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
| Icebergs | 2,991 | 95% |
| Surveys | 42 | 1% |
| Missiles | 38 | 1% |
| Nav aids | 24 | 1% |
| Other | 18 | 1% |
| Wrecks | 12 | 0% |
| Derelicts | 4 | 0% |
| Exercises | 2 | 0% |
| Containers | 1 | 0% |
Archive · 3,129 cancelled
- HYDROLANT 993/21 · Icebergs2021-04-11 → 2021-04-12Icebergs reported in: a. A63, 69-37S 056-42W
- HYDROLANT 975/21 · Icebergs2021-04-09 → 2021-04-10Icebergs reported in: a. A63, 69-37S 056-42W
- HYDROLANT 962/21 · Icebergs2021-04-08 → 2021-04-09Icebergs reported in: a. A63, 69-37S 056-42W
- HYDROLANT 953/21 · Icebergs2021-04-07 → 2021-04-08Icebergs reported in: a. A63, 69-37S 056-42W
- HYDROLANT 943/21 · Icebergs2021-04-06 → 2021-04-07Icebergs reported in: a. A63, 69-37S 056-42W
- HYDROLANT 929/21 · Icebergs2021-04-05 → 2021-04-06Icebergs reported in: a. A63, 69-37S 056-42W
- HYDROLANT 908/21 · Icebergs2021-04-04 → 2021-04-05Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 900/21 · Icebergs2021-04-03 → 2021-04-04Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 896/21 · Icebergs2021-04-02 → 2021-04-03Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 890/21 · Icebergs2021-04-01 → 2021-04-02Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 883/21 · Icebergs2021-03-31 → 2021-04-01Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 872/21 · Icebergs2021-03-30 → 2021-03-31Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 849/21 · Icebergs2021-03-28 → 2021-03-29Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 844/21 · Icebergs2021-03-27 → 2021-03-28Icebergs reported in: a. A63, 70-14S 054-22W
- HYDROLANT 838/21 · Icebergs2021-03-26 → 2021-03-27Icebergs reported in: a. A63, 69-45S 056-50W
- HYDROLANT 831/21 · Icebergs2021-03-25 → 2021-03-26Icebergs reported in: a. A63, 69-45S 056-50W
- HYDROLANT 824/21 · Icebergs2021-03-24 → 2021-03-25Icebergs reported in: a. A63, 69-45S 056-50W
- HYDROLANT 818/21 · Icebergs2021-03-23 → 2021-03-24Icebergs reported in: a. A63, 69-45S 056-50W
- HYDROLANT 811/21 · Icebergs2021-03-22 → 2021-03-23Icebergs reported in: a. A63, 69-45S 056-50W
- HYDROLANT 797/21 · Icebergs2021-03-21 → 2021-03-22Icebergs reported in: a. A63, 69-45S 056-50W
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.