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 203/18 · Missiles2018-01-15 → 2018-01-21
    Hazardous operations 0130Z to 0530Z daily 20 thru 28 jan in areas bound by: a. rocket launching 39-11.42S…
  2. HYDROPAC 187/18 · Exercises2018-01-15 → 2018-01-19
    Hazardous operations 0300Z to 0700Z daily 18 and 19 jan in areas bound by: a. 20-48.36N 087-02.58E,…
  3. HYDROPAC 58/18 · Missiles2018-01-05 → 2018-01-09
    Hazardous operations space debris 080300Z to 080552Z jan, alternate 090300Z to 090552Z jan in area bound by…
  4. HYDROPAC 51/18 · Exercises2018-01-05 → 2018-01-12
    Hazardous operations 0330Z to 0730Z daily 10 thru 12 jan: a. within ten miles of 13-43.9N 080-14.2E
  5. HYDROPAC 43/18 · Missiles2018-01-04 → 2018-01-08
    Hazardous operations space debris 070300Z to 070552Z jan, alternate 080300Z to 080552Z jan in area bound by…
  6. HYDROPAC 42/18 · Derelicts2018-01-04 → 2018-01-07
    Derelict 100 meter vessel, white hull, partially submerged and adrift in 25-30S 050-49E on 04 jan
  7. HYDROPAC 21/18 · Missiles2018-01-02 → 2018-01-04
    Hazardous operations space debris 060300Z to 060552Z jan, alternate 070300Z to 070552Z jan in area bound by…
  8. HYDROPAC 4653/17 · Missiles2017-12-31 → 2018-01-02
    Hazardous operations space debris 050300Z to 050552Z jan 18, alternate 060300Z to 060552Z jan 18 in area…
  9. HYDROPAC 4652/17 · Derelicts2017-12-30 → 2018-01-02
    Derelict 24 meter F/V, white hull, partially submerged and adrift in 25-36.8S 049-29.8E
  10. HYDROPAC 4607/17 · Nav aids2017-12-27 → 2018-03-23
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  11. HYDROPAC 4588/17 · Nav aids2017-12-26 → 2017-12-26
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  12. HYDROPAC 4582/17 · Derelicts2017-12-26 → 2017-12-29
    Debris from sunken vessel adrift in vicinity 02-23S 058-28E
  13. HYDROPAC 4476/17 · Exercises2017-12-19 → 2017-12-21
    Gunnery exercises 210900Z to 211100Z dec in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  14. HYDROPAC 4475/17 · Surveys2017-12-19 → 2018-02-02
    Survey operations in progress until 01 feb 18 by M/V egina in area bound by 20-46S 055-20E, 20-41S 055-13E,…
  15. HYDROPAC 4445/17 · Derelicts2017-12-17 → 2017-12-20
    Derelict 24 meter F/V, white hull, partially submerged and adrift in 25-44.0S 049-15.4E
  16. HYDROPAC 4424/17 · Other2017-12-15 → 2017-12-15
    An earthquake occurred at 151647Z dec with a preliminary magnitude of 6.8, in 07-57.0S 108-01.2E
  17. HYDROPAC 4399/17 · Missiles2017-12-14 → 2017-12-16
    Hazardous operations, rocket launching 0130Z to 0530Z daily 08 thru 22 dec in areas bound by: a. 39-11.42S…
  18. HYDROPAC 4376/17 · Exercises2017-12-13 → 2017-12-18
    Hazardous operations 0630Z to 1030Z daily 16 thru 18 dec in areas bound by: a. 17-44.53N 083-29.87E,…
  19. HYDROPAC 4370/17 · Missiles2017-12-12 → 2017-12-15
    Hazardous operations, rocket re-entry 151609Z to 151733Z dec in area bound by 51-06S 157-04E, 47-02S…
  20. HYDROPAC 4368/17 · Missiles2017-12-12 → 2017-12-12
    Hazardous operations, rocket re-entry 131657Z to 131821Z dec in area bound by 51-06S 157-04E, 47-02S…

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