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 1023/07 · Other2007-06-11 → 2007-06-12
    M/V corsier reports crewman requiring medical assistance in 40-09S 129-57E at 110840Z jun
  2. HYDROPAC 929/07 · Cable ops2007-05-25 → 2007-07-03
    Seismic survey in progress until further notice by M/V orient explorer towing 8000 meter long cable along…
  3. HYDROPAC 886/07 · Nav aids2007-05-17 → 2007-05-20
    RACON at maatsuyker island light 43-39.4S 146-16.4E temporarily discontinued
  4. HYDROPAC 875/07 · Cable ops2007-05-13 → 2007-07-09
    Seismic survey in progress until further notice by M/V akademik fersman towing cable in area bound by 22-53S…
  5. HYDROPAC 849/07 · Derelicts2007-05-10 → 2007-05-16
    Derelict vessel partially submerged and adrift in 12-02S 122-42E at 090700Z may
  6. HYDROPAC 831/07 · Other2007-05-07 → 2007-07-04
    Pipelaying operations in progress until further notice by M/V pacific worker and M/V pacific warlock…
  7. HYDROPAC 817/07 · Derelicts2007-05-05 → 2007-05-12
    Derelict 13 meter S/V koraasa 77 adrift vicinity 44-31.1S 144-20.4E at 050200Z may
  8. HYDROPAC 797/07 · Derelicts2007-04-30 → 2007-05-07
    Derelict 25 meter vessel, partially submerged and adrift in 31-59S 037-30E
  9. HYDROPAC 765/07 · Nav aids2007-04-26 → 2008-07-19
    Airlie island light 21-19.4S 115-10.0E, range changed to 16 miles
  10. HYDROPAC 754/07 · Nav aids2007-04-24 → 2007-04-25
    Rottnest island light 32-00.5S 115-30.1E unlit
  11. HYDROPAC 707/07 · Other2007-04-19 → 2008-02-10
    North island light 28-18S 113-35E range increased to 18 miles
  12. HYDROPAC 706/07 · Nav aids2007-04-19 → 2008-08-17
    RACON (n) established at north island light 28-18S 113-35E
  13. HYDROPAC 698/07 · Derelicts2007-04-19 → 2007-04-26
    Derelict 25 meter vessel, white hull, partially submerged and adrift in 32-57.3S 041-22.8E
  14. HYDROPAC 681/07 · Exercises2007-04-16 → 2007-04-17
    Hazardous operations 0630Z to 0800Z daily 17 thru 20 apr within 216 miles of 38-59S 042-35E
  15. HYDROPAC 680/07 · Nav aids2007-04-16 → 2008-02-10
    RACON (X) established and range increased to 18 miles at pelsaert island light 28-59.4S 113-57.7E
  16. HYDROPAC 597/07 · Other2007-04-03 → 2007-04-04
    F/V fu yuan yu 838 reports crew member requiring medical assistance in 06-23S 090-30E at 031840Z apr
  17. HYDROPAC 583/07 · Nav aids2007-03-30 → 2008-02-10
    Browse island light 14-06.6S 123-32.8E unlit, RACON temporarily discontinued
  18. HYDROPAC 563/07 · Exercises2007-03-27 → 2007-03-28
    Hazardous operations 0630Z to 0800Z daily 27 thru 31 mar within 216 miles of 38-59S 042-35E
  19. HYDROPAC 561/07 · Exercises2007-03-26 → 2007-03-27
    Hazardous operations 0630Z to 0800Z daily 27 thru 31 mar within 216 miles of 38-49S 042-35E
  20. HYDROPAC 467/07 · Cable ops2007-03-13 → 2007-08-30
    Cable laying operations in progress until further notice by cableship rene descartes along trackline joining…

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