Indian Ocean

IHO sea area 45 · 20° to 147° E, -60° to 10° N

in force
21
last 12 months
56
since 1997
3,589
categories
15

In force now · 21

  1. NAVAREA X 96/26 · Missiles2026-08-20
    Space debris danger area 100 nautical miles either side of a line in the Southern Ocean from Cape Darnley to Tasmania, daily 25-31 August 2026 0809-1608 UTC.
  2. AUSCOAST 279/26 · Surveys2026-08-19
    Special purpose vessel Fugro Kwilena is conducting underwater operations in area from 19-47.68S 115-12.91E to 19-57.87S 115-25.37E, requesting 1.5 nautical mile clearance.
  3. AUSCOAST 275/26 · Surveys2026-08-16
    Drill rig Transocean Endurance is at position 19-31.18S 116-06.65E, requesting 2.5 nautical miles clearance.
  4. HYDROPAC 2330/26 · Nav aids2026-08-14
    Four yellow buoys with flashing yellow light every 5 seconds established near 29-27.00S 114-52.18E.
  5. AUSCOAST 273/26 · Nav aids2026-08-14
    Four yellow surface buoys with flashing yellow light every 5 seconds established within 0.3 nautical miles of 29-27.00S 114-52.18E.
  6. HYDROPAC 2327/26 · Missiles2026-08-13
    Space debris hazard operations in the Indian Ocean from August 16 to 23, daily 0148Z to 0429Z, between 23S-38S and 058E-074E.
  7. HYDROPAC 2323/26 · Cable ops2026-08-13
    Cable operations by vessel Rebecca continue until 15 September in eastern Indian Ocean off Sri Lanka; wide berth requested.
  8. HYDROPAC 2288/26 · Surveys2026-08-10
    Underwater operations are in progress by vessel VE Constructor in an area off Australia, bounded by 19-12S to 19-21S and 116-30E to 116-50E, requesting one mile berth.
  9. AUSCOAST 270/26 · Surveys2026-08-10
    Special purpose vessel VE Constructor conducting underwater operations in area bounded by 19-12S to 19-21S and 116-30E to 116-50E, 0.5 nautical miles clearance requested.
  10. HYDROPAC 2302/26 · Missiles2026-08-08
    Space debris operations in the Indian Ocean from Aug 16 to 22 in an area near 25S 58E to 37S 71E.
  11. AUSCOAST 267/26 · Surveys2026-08-05
    Drill rig JANSZ is at position 19-52.73S 114-36.50E, requesting a 2.5 nautical mile clearance.
  12. HYDROPAC 2235/26 · Missiles2026-08-02
    Space debris hazard operations are scheduled in the Eastern Indian Ocean and South Pacific on August 10-16, 2026, during specific time windows.
  13. HYDROPAC 2203/26 · Surveys2026-08-01
    Underwater operations by the vessel Bhagwan Dryden at 20-06.96S 116-26.11E in the Eastern Indian Ocean, Australia, request a three-mile berth.
  14. AUSCOAST 260/26 · Surveys2026-08-01
    Special purpose vessel Bhagwan Dryden is conducting underwater operations at position 20-06.96S 116-26.11E, requesting 2.5 nautical miles clearance.
  15. HYDROPAC 2115/26 · Nav aids2026-07-24
    Cliff Head platform at 29-26.99S 114-52.18E is unlit; the Hydropac warning 2088/26 is canceled.
  16. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  17. HYDROPAC 1015/26 · Other2026-04-04
    A flashing white mooring buoy in the eastern Indian Ocean near Australia is semi-submerged at 20-16.32S 116-16.58E.
  18. AUSCOAST 130/26 · Other2026-04-04
    A semi-submerged mooring light buoy with a flashing white light is at position 20-16.32S 116-16.58E.
  19. HYDROPAC 957/26 · Surveys2026-03-29
    Underwater operations are in progress by vessel Safe Boreas in the eastern Indian Ocean off Australia, within 12-54.90S 124-25.10E to 12-59.90S 124-35.10E.
  20. AUSCOAST 120/26 · Surveys2026-03-29
    Special purpose vessel Safe Boreas is supporting underwater operations in a bounded area; 2.5 nautical mile clearance requested.
  21. HYDROPAC 363/24 · Other2024-01-30
    At 21-06.00S 055-36.00E, MRCC La Réunion is unable to receive MF and HF transmissions; for assistance contact them at 2622 6243 4343 or [email protected].

Longest in force

  1. HYDROPAC 363/24 · Other2024-01-30
    At 21-06.00S 055-36.00E, MRCC La Réunion is unable to receive MF and HF transmissions; for assistance contact them at 2622 6243 4343 or [email protected].
  2. AUSCOAST 120/26 · Surveys2026-03-29
    Special purpose vessel Safe Boreas is supporting underwater operations in a bounded area; 2.5 nautical mile clearance requested.
  3. HYDROPAC 957/26 · Surveys2026-03-29
    Underwater operations are in progress by vessel Safe Boreas in the eastern Indian Ocean off Australia, within 12-54.90S 124-25.10E to 12-59.90S 124-35.10E.
  4. AUSCOAST 130/26 · Other2026-04-04
    A semi-submerged mooring light buoy with a flashing white light is at position 20-16.32S 116-16.58E.
  5. HYDROPAC 1015/26 · Other2026-04-04
    A flashing white mooring buoy in the eastern Indian Ocean near Australia is semi-submerged at 20-16.32S 116-16.58E.

By year

97
98
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
25
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Derelicts62217%
Missiles56016%
Nav aids46713%
Surveys41211%
Other37610%
Exercises35710%
Piracy34110%
Cable ops1955%
Debris1093%
Icebergs822%
Wrecks371%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,568 cancelled

  1. HYDROPAC 1665/11 · Derelicts2011-06-07 → 2011-06-10
    Derelict seven meter vessel adrift in 27-51.01S 112-42.99E at 070630Z jun
  2. HYDROPAC 1634/11 · Piracy2011-06-02 → 2011-06-11
    M/V conducting mothership operations in 02-19N 050-00E at 021029Z jun
  3. HYDROPAC 1611/11 · Debris2011-05-31 → 2011-06-03
    Nga chart 74012 (10TH ed)
  4. HYDROPAC 1581/11 · Piracy2011-05-27 → 2011-05-29
    M/V orna conducting mothership operations in 07-09N 053-20E at 270830Z may
  5. HYDROPAC 1570/11 · Piracy2011-05-26 → 2011-05-27
    M/V orna conducting mothership operations in 06-09N 050-33E at 260908Z may
  6. HYDROPAC 1522/11 · Exercises2011-05-22 → 2011-05-26
    Hazardous operations
  7. HYDROPAC 1498/11 · Piracy2011-05-18 → 2011-05-18
    M/V attacked in 11-56S 058-41E at 181451Z may
  8. HYDROPAC 1478/11 · Piracy2011-05-17 → 2011-05-28
    M/V attacked in 09-24S 040-44E at 171156Z may
  9. HYDROPAC 1477/11 · Piracy2011-05-17 → 2011-05-28
    F/V attacked vicinity 09-00S 040-56E at 170733Z may
  10. HYDROPAC 1473/11 · Piracy2011-05-17 → 2011-05-28
    F/V attacked vicinity 06-51N 051-22E at 170528Z may
  11. HYDROPAC 1468/11 · Piracy2011-05-16 → 2011-05-28
    M/V eagle conducting mothership operations in 07-17N 053-26E at 161310Z may
  12. HYDROPAC 1369/11 · Debris2011-05-06 → 2011-05-09
    Six meter log adrift vicinity 11-49.8S 119-22.0E at 050010Z may
  13. HYDROPAC 1335/11 · Piracy2011-05-01 → 2011-05-14
    M/V gemini pirated vicinity 02-47S 043-03E at 010733Z may
  14. HYDROPAC 1321/11 · Piracy2011-04-30 → 2011-05-14
    Vessel jelbut 02 conducting mothership operations in 03-58N 054-29E at 300638Z apr
  15. HYDROPAC 1319/11 · Piracy2011-04-30 → 2011-05-07
    M/V attacked vicinity 07-01S 041-22E at 300430Z apr
  16. HYDROPAC 1308/11 · Piracy2011-04-29 → 2011-04-30
    Vessel jelbut 02 conducting mothership operations in 03-48N 051-41E at 290827Z apr 11
  17. HYDROPAC 1286/11 · Exercises2011-04-27 → 2011-04-30
    Gunnery exercises 300700Z to 301400Z apr in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  18. HYDROPAC 1264/11 · Debris2011-04-25 → 2011-04-28
    Six meter long log adrift in 13-59.66S 123-17.88E at 251300Z apr
  19. HYDROPAC 1256/11 · Derelicts2011-04-25 → 2011-04-28
    Derelict F/V adrift in 13-36.55S 120-36.55E at 250505Z apr
  20. HYDROPAC 1250/11 · Piracy2011-04-24 → 2011-04-30
    M/V attacked in 06-57S 045-40E at 241500Z apr

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