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
- 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 | 2,992 | 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 · 3,130 cancelled
- HYDROLANT 642/17 · Icebergs2017-02-26 → 2017-02-27Icebergs reported in: a. A61, 63-32S 032-37W
- HYDROLANT 637/17 · Icebergs2017-02-25 → 2017-02-26Icebergs reported in: a. A61, 63-33S 032-42W
- HYDROLANT 628/17 · Icebergs2017-02-24 → 2017-02-25Icebergs reported in: a. A61, 63-34S 032-46W
- HYDROLANT 613/17 · Icebergs2017-02-23 → 2017-02-24Icebergs reported in: a. A61, 63-38S 032-31W
- HYDROLANT 600/17 · Icebergs2017-02-22 → 2017-02-23Icebergs reported in: a. A61, 63-36S 032-56W
- HYDROLANT 591/17 · Icebergs2017-02-21 → 2017-02-22Icebergs reported in: a. A61, 63-37S 033-02W
- HYDROPAC 628/17 · Icebergs2017-02-21 → 2017-02-24Icebergs reported on 21 feb: a. B22A, 73-59S 108-52W
- HYDROLANT 582/17 · Icebergs2017-02-20 → 2017-02-21Icebergs reported in: a. A61, 63-35S 033-04W
- HYDROLANT 573/17 · Icebergs2017-02-19 → 2017-02-20Icebergs reported in: a. A61, 63-35S 033-11W
- HYDROLANT 563/17 · Icebergs2017-02-18 → 2017-02-19Icebergs reported in: a. A61, 63-34S 033-17W
- HYDROLANT 550/17 · Icebergs2017-02-17 → 2017-02-18Icebergs reported in: a. A61, 63-34S 033-24W
- HYDROLANT 539/17 · Icebergs2017-02-16 → 2017-02-17Icebergs reported in: a. A61, 63-33S 033-27W
- HYDROLANT 523/17 · Icebergs2017-02-15 → 2017-02-16Icebergs reported in: a. A61, 63-30S 033-32W
- HYDROLANT 509/17 · Icebergs2017-02-14 → 2017-02-15Icebergs reported in: a. A61, 63-31S 033-30W
- HYDROLANT 496/17 · Icebergs2017-02-13 → 2017-02-14Icebergs reported in: a. A61, 63-29S 033-33W
- HYDROLANT 490/17 · Icebergs2017-02-12 → 2017-02-13Icebergs reported in: a. A61, 63-29S 033-32W
- HYDROLANT 477/17 · Icebergs2017-02-11 → 2017-02-12Icebergs reported in: a. A61, 63-29S 033-34W
- HYDROLANT 467/17 · Icebergs2017-02-10 → 2017-02-11Icebergs reported in: a. A61, 63-29S 033-37W
- HYDROLANT 461/17 · Icebergs2017-02-09 → 2017-02-10Icebergs reported in: a. A61, 63-31S 033-39W
- HYDROLANT 441/17 · Icebergs2017-02-08 → 2017-02-09Icebergs reported in: a. A61, 63-29S 033-41W
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.