Southern Ocean
IHO sea area 67 · -180° to 180° E, -86° to -60° N
- in force
- 3
- last 12 months
- 3
- since 1999
- 3,131
- 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 | 2,990 | 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 · 3,128 cancelled
- HYDROLANT 709/23 · Icebergs2023-04-02 → 2023-04-03Icebergs reported in: a. A23A, 71-52.80S 050-04.80W
- HYDROLANT 705/23 · Icebergs2023-04-01 → 2023-04-02Icebergs reported in: a. A23A, 71-52.80S 050-04.80W
- HYDROLANT 697/23 · Icebergs2023-03-31 → 2023-03-31Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 690/23 · Icebergs2023-03-30 → 2023-03-31Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 687/23 · Icebergs2023-03-29 → 2023-03-30Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 679/23 · Icebergs2023-03-28 → 2023-03-29Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 670/23 · Icebergs2023-03-27 → 2023-03-28Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 662/23 · Icebergs2023-03-26 → 2023-03-27Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 657/23 · Icebergs2023-03-25 → 2023-03-26Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 650/23 · Icebergs2023-03-24 → 2023-03-25Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 642/23 · Icebergs2023-03-23 → 2023-03-24Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 634/23 · Icebergs2023-03-22 → 2023-03-23Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 626/23 · Icebergs2023-03-21 → 2023-03-22Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 615/23 · Icebergs2023-03-20 → 2023-03-21Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 614/23 · Icebergs2023-03-20 → 2023-03-21Icebergs reported in: a. A76A, 55-58.00S 045-27.00W
- HYDROLANT 605/23 · Icebergs2023-03-19 → 2023-03-20Icebergs reported in: a. A23A, 71-55.20S 049-17.40W
- HYDROLANT 604/23 · Icebergs2023-03-19 → 2023-03-20Icebergs reported in: a. A76A, 55-56.00S 045-30.00W
- HYDROLANT 599/23 · Icebergs2023-03-18 → 2023-03-19Icebergs reported in: a. A76A, 55-53.00S 045-37.00W
- HYDROLANT 598/23 · Icebergs2023-03-18 → 2023-03-19Icebergs reported in: a. A23A, 71-54.60S 049-01.80W
- HYDROLANT 588/23 · Icebergs2023-03-17 → 2023-03-18Icebergs reported in: a. A76A, 55-46.00S 045-44.00W
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.