Indian Ocean

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

in force
23
last 12 months
23
since 1997
3,519
categories
15

In force now · 23

  1. 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.
  2. 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.
  3. 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.
  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. 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.
  13. 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.
  14. 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.
  15. 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.
  16. HYDROPAC 2157/26 · Surveys2026-07-27
    Underwater operations are underway by the vessel Fugro Kwilena in the eastern Indian Ocean off Australia until further notice. A two-mile berth is requested.
  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%
Missiles54215%
Nav aids46113%
Surveys37811%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,496 cancelled

  1. HYDROPAC 159/21 · Missiles2021-01-13 → 2021-01-14
    Hazardous operations, space debris 172017Z to 172110Z jan, alternate 181955Z to 182048Z jan in area bound by…
  2. HYDROPAC 88/21 · Surveys2021-01-08 → 2021-03-10
    Survey operations in progress until 09 mar by M/V marion dufresne along trackline joining 20-55.02S…
  3. HYDROPAC 41/21 · Surveys2021-01-04 → 2021-03-28
    Underwater operations in progress in area bound by 19-51.48S 114-29.12E, 19-52.47S 114-29.66E, 19-49.25S…
  4. HYDROPAC 14/21 · Surveys2021-01-02 → 2021-01-07
    Underwater operations 05 thru 06 jan by M/V marion dufresne in area bound by 21-02.10S 055-13.02E, 20-54.00S…
  5. HYDROPAC 3846/20 · Missiles2020-12-26 → 2020-12-28
    Hazardous operations, space debris 1854Z to 2011Z daily 28 dec thru 21 jan 21 in area within 50 miles of…
  6. HYDROPAC 3842/20 · Cable ops2020-12-26 → 2021-03-29
    Cable operations 28 dec thru 28 mar 21 by M/V explora along trackline joining 21-15.69S 056-48.76E,…
  7. HYDROPAC 3817/20 · Exercises2020-12-23 → 2021-02-01
    Hazardous operations in progress until 312359Z jan 21 in area bound by 00-52.24S 042-10.26E, 02-09.47N…
  8. HYDROPAC 3813/20 · Other2020-12-23 → 2021-01-08
    F/V futre reports unconscious crewman requiring medical assistance in 23-39.2S 066-14.6E
  9. HYDROPAC 3808/20 · Missiles2020-12-23 → 2020-12-31
    Hazardous operations, rocket launching 1854Z to 2011Z daily 28 dec thru 27 jan 21 in area bound by 43-28S…
  10. HYDROPAC 3680/20 · Debris2020-12-13 → 2020-12-16
    Fishing gear adrift in vicinity 14-52.6S 122-07.6E at 130531Z dec
  11. HYDROPAC 3677/20 · Surveys2020-12-12 → 2020-12-14
    Survey operations in progress until further notice by M/V limitless in 19-02.35S 118-44.91E
  12. HYDROPAC 3644/20 · Nav aids2020-12-09 → 2020-12-11
    RACON at browse island light 14-06.5S 123-32.9E inoperative
  13. HYDROPAC 3618/20 · Derelicts2020-12-07 → 2020-12-10
    Derelict 14 meter S/V savana, partially submerged and adrift in 21-33.0S 107-46.8E at 070800Z dec
  14. HYDROPAC 3601/20 · Missiles2020-12-05 → 2020-12-06
    Hazardous operations, space debris 061646Z to 061727Z dec, alternate 081557Z to 081637Z dec in area bound by…
  15. HYDROPAC 3579/20 · Debris2020-12-04 → 2020-12-07
    1600 meter long cable with orange and yellow buoys adrift in 21-32.25S 055-54.50E
  16. HYDROPAC 3535/20 · Missiles2020-11-30 → 2020-12-05
    Hazardous operations, space debris 051708Z to 051749Z dec, alternate 061646Z to 061727Z dec in area bound by…
  17. HYDROPAC 3469/20 · Missiles2020-11-24 → 2020-12-29
    Hazardous operations, rocket launching 0352Z to 0509Z daily 29 nov thru 29 dec in area bound by 41-00S…
  18. HYDROPAC 3351/20 · Missiles2020-11-14 → 2020-11-16
    Hazardous operations, space debris 160054Z to 160141Z, alternate 182342Z to 190030Z nov in area bound by…
  19. HYDROPAC 3330/20 · Missiles2020-11-12 → 2020-12-17
    Hazardous operations, rocket launching 0404Z to 0521Z daily 17 nov thru 17 dec in area bound by 31-32S…
  20. HYDROPAC 3327/20 · Missiles2020-11-12 → 2020-11-14
    Hazardous operations, space debris 150116Z to 150203Z nov, alternate 160054Z to 160141Z and 182342Z to…

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