Indian Ocean

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

in force
23
last 12 months
27
since 1997
3,523
categories
15

In force now · 23

  1. NAVAREA X 96/26 · Missiles2026-08-20
    NAVAREA X 96/26
  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. NAVAREA X 94/26 · Missiles2026-08-15
    Space debris danger area is in effect from Cape Darnely to Tasmania, daily 1525-2235 UTC, 20-26 August 2026.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. NAVAREA X 91/26 · Missiles2026-08-05
    Space debris danger area from Cape Darnley to Tasmania, 80 nautical miles either side of centreline, daily between 1455 and 2205 UTC, 10 to 16 August 2026.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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
26

By month (all years)

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

By category · since 1997

Derelicts62118%
Missiles54415%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 4365/17 · Exercises2017-12-12 → 2017-12-18
    Hazardous operations 0630Z to 1030Z daily 16 thru 18 dec in area bound by 06-42.27S 088-43.91E, 10-41.43S…
  2. HYDROPAC 4356/17 · Derelicts2017-12-12 → 2017-12-15
    Derelict F/V adrift in 00-32S 092-28E on 11 dec
  3. HYDROPAC 4307/17 · Missiles2017-12-08 → 2017-12-12
    Hazardous operations, rocket re-entry 121719Z to 121843Z dec, alternate 131657Z to 131821Z dec in area bound…
  4. HYDROPAC 4274/17 · Derelicts2017-12-06 → 2017-12-09
    F/V tikiri 2 adrift in 00-38S 082-34E at 051125Z dec
  5. HYDROPAC 4258/17 · Derelicts2017-12-05 → 2017-12-07
    F/V erosh putha adrift in 00-46N 086-50E at 040330Z dec
  6. HYDROPAC 4247/17 · Nav aids2017-12-04 → 2018-03-23
    Odas buoy established in 05-00S 100-00E
  7. HYDROPAC 4238/17 · Derelicts2017-12-04 → 2017-12-07
    Derelict 24 meter F/V, white hull, partially submerged and adrift in 25-23.0S 049-27.3E on 04 dec
  8. HYDROPAC 4227/17 · Exercises2017-12-02 → 2017-12-14
    Hazardous operations 0130Z to 0530Z daily 08 thru 17 dec in areas bound by: a. 39-11.42S 177-46.64E,…
  9. HYDROPAC 4224/17 · Missiles2017-12-02 → 2017-12-02
    Hazardous operations rocket launching 0130Z to 0530Z daily 07 thru 16 dec in areas bound by: a. 39-11.42S…
  10. HYDROPAC 4143/17 · Surveys2017-11-28 → 2017-11-29
    Underwater operations in progress until further notice with submersible along trackline between 14-11S…
  11. HYDROPAC 4141/17 · Exercises2017-11-27 → 2017-12-01
    Gunnery exercises 291530Z to 291830Z, 300700Z to 301300Z nov and 010600Z to 011300Z dec in area bound by…
  12. HYDROPAC 4029/17 · Surveys2017-11-19 → 2017-11-24
    Underwater operations in progress until further notice by M/V joides resolution in 33-47.61S 112-29.13E
  13. HYDROPAC 4026/17 · Other2017-11-19 → 2017-11-19
    Vessel requesting assistance in 13-35S 109-48E
  14. HYDROPAC 4014/17 · Piracy2017-11-18 → 2017-11-20
    Possible piracy activity in area within 150 miles of 01-52S 049-23E
  15. HYDROPAC 4003/17 · Piracy2017-11-17 → 2017-11-24
    M/V attacked in vicinity 01-56S 047-57E at 170914Z nov
  16. HYDROPAC 3988/17 · Derelicts2017-11-17 → 2017-11-20
    Derelict ten meter vessel adrift in 36-00.0S 092-48.5E at 170200Z nov
  17. HYDROPAC 3985/17 · Missiles2017-11-16 → 2017-11-17
    Hazardous operations space debris 180300Z to 180637Z nov, alternate 190300Z to 190637Z nov in area bound by…
  18. HYDROPAC 3965/17 · Missiles2017-11-15 → 2017-11-16
    Hazardous operations space debris 170300Z to 170637Z nov, alternate 180300Z to 180637Z nov in area bound by…
  19. HYDROPAC 3933/17 · Surveys2017-11-13 → 2017-11-19
    Underwater operations in progress until further notice by M/V joides resolution in 34-20.92S 112-47.96E
  20. HYDROPAC 3895/17 · Missiles2017-11-11 → 2017-11-15
    Hazardous operations space debris 160300Z to 160637Z nov, alternate 170300Z to 170637Z nov in area bound by…

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