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 455/07 · Cable ops2007-03-12 → 2007-05-13
    Seismic survey in progress until further notice by M/V akademik fersman in area bound by 21-05S 115-12E,…
  2. HYDROPAC 428/07 · Cable ops2007-03-08 → 2007-03-13
    Cable laying operations 13 mar until further notice by cableship rene descartes along trackline joining…
  3. HYDROPAC 424/07 · Derelicts2007-03-08 → 2007-03-15
    Derelict 176 meter M/V gracia adrift vicinity 24-48S 051-56E
  4. HYDROPAC 417/07 · Derelicts2007-03-07 → 2007-03-08
    Derelict 176 meter M/V gracia adrift vicinity 24-37.1S 052-01.6E
  5. HYDROPAC 410/07 · Derelicts2007-03-06 → 2007-03-07
    Derelict 176 meter M/V gracia adrift vicinity 24-31S 052-10E
  6. HYDROPAC 397/07 · Derelicts2007-03-04 → 2007-03-06
    Derelict 176 meter M/V gracia adrift vicinity 24-09S 051-11E at 281345Z feb
  7. HYDROPAC 366/07 · Containers2007-02-28 → 2007-03-07
    15 40 foot containers adrift vicinity 24-00S 051-13E
  8. HYDROPAC 330/07 · Nav aids2007-02-23 → 2008-02-10
    Gantheaume point light 17-58.5S 122-10.5E unlit
  9. HYDROPAC 264/07 · Cable ops2007-02-10 → 2007-10-17
    Seismic survey in progress until further notice by M/V pacific sword towing cable vicinity 21-29S 114-00E
  10. HYDROPAC 254/07 · Cable ops2007-02-09 → 2007-02-26
    Seismic survey in progress until further notice by M/V veritas voyager towing four two mile long cables…
  11. HYDROPAC 228/07 · Nav aids2007-02-05 → 2008-02-10
    Northwest cape light 21-48.4S 114-09.6E unlit
  12. HYDROPAC 170/07 · Cable ops2007-01-25 → 2008-02-10
    Seismic survey in progress until further notice by M/V odin explorer towing 3.5 mile long cable in area…
  13. HYDROPAC 127/07 · Nav aids2007-01-19 → 2007-01-29
    North west cape light 21-48.4S 114-09.6E unlit
  14. HYDROPAC 54/07 · Surveys2007-01-09 → 2007-02-22
    Oceanographic operations in progress until 21 feb by M/V le suroit in areas: a. along trackline joining…
  15. HYDROPAC 47/07 · Exercises2007-01-09 → 2007-01-10
    Gunnery exercises 101100Z to 101300Z jan in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  16. HYDROPAC 2531/06 · Derelicts2006-12-26 → 2007-01-10
    Derelict F/V semi submerged and adrift vicinity 12-24S 123-34E at 251211Z dec
  17. HYDROPAC 2519/06 · Other2006-12-23 → 2007-02-08
    Contact lost with eight persons on providence island (09-04S 050-57E) due to tropical cyclone bondo
  18. HYDROPAC 2516/06 · Surveys2006-12-22 → 2006-12-28
    Underwater operations in progress until further notice by M/V bavenit vicinity 19-59.7S 115-22.0E
  19. HYDROPAC 2505/06 · Surveys2006-12-21 → 2006-12-27
    Underwater operations in progress until further notice by M/V bavenit vicinity 19-20S 115-22E
  20. HYDROPAC 2500/06 · Other2006-12-21 → 2007-02-08
    F/V nikko maru 1 reports crewman with possible diabetes requiring diagnostic kit and medication in 38-24S…

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