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
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01
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03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
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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 427/17 · Icebergs2017-02-07 → 2017-02-08Icebergs reported in: a. A61, 63-29S 033-41W
- HYDROLANT 418/17 · Icebergs2017-02-06 → 2017-02-07Icebergs reported in: a. A61, 63-30S 033-45W
- HYDROLANT 405/17 · Icebergs2017-02-05 → 2017-02-06Icebergs reported in: a. A61, 63-32S 033-51W
- HYDROLANT 392/17 · Icebergs2017-02-04 → 2017-02-05Icebergs reported in: a. A61, 63-33S 033-55W
- HYDROLANT 380/17 · Icebergs2017-02-03 → 2017-02-04Icebergs reported in: a. A61, 63-32S 034-00W
- HYDROLANT 356/17 · Icebergs2017-02-02 → 2017-02-03Icebergs reported in: a. A61, 63-34S 034-00W
- HYDROLANT 341/17 · Icebergs2017-02-01 → 2017-02-02Icebergs reported in: a. A61, 63-33S 034-09W
- HYDROLANT 328/17 · Icebergs2017-01-31 → 2017-02-01Icebergs reported in: a. A61, 63-32S 034-11W
- HYDROLANT 314/17 · Icebergs2017-01-30 → 2017-01-31Icebergs reported in: a. A61, 63-31S 034-15W
- HYDROLANT 305/17 · Icebergs2017-01-29 → 2017-01-30Icebergs reported in: a. A61, 63-31S 034-14W
- HYDROLANT 300/17 · Icebergs2017-01-28 → 2017-01-29B. B09D, 64-29S 045-44W
- HYDROLANT 286/17 · Icebergs2017-01-27 → 2017-01-28B. B09D, 64-29S 045-44W
- HYDROLANT 274/17 · Icebergs2017-01-26 → 2017-01-27B. B09D, 64-31S 045-48W
- HYDROLANT 263/17 · Icebergs2017-01-25 → 2017-01-26B. B09D, 64-33S 045-49W
- HYDROLANT 255/17 · Icebergs2017-01-24 → 2017-01-25B. 58-32S 030-29W
- HYDROLANT 240/17 · Icebergs2017-01-23 → 2017-01-24B. B09D, 64-37 045-51W
- HYDROLANT 3166/16 · Nav aids2016-11-26 → 2017-03-31RACON at montravel rock buoy 63-08.6S 058-02.5W inoperative
- HYDROPAC 2895/16 · Missiles2016-09-22 → 2016-09-26Hazardous operations 0330Z to 0730Z daily 26 and 28 sep: a. within ten miles of 13-43.9N 080-14.2E
- HYDROLANT 1273/16 · Icebergs2016-05-27 → 2016-05-30Icebergs reported in: a. 61-07S 053-51W b. 60-05S 052-42W 2. cancel this msg 302245Z may 16
- HYDROPAC 1537/16 · Missiles2016-05-24 → 2016-05-30Space debris
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.