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
    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. 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 1193/17 · Derelicts2017-04-03 → 2017-04-11
    50 foot S/V climate action now dismasted and adrift in 48-30-38S 022-31-43E
  2. HYDROPAC 1181/17 · Piracy2017-04-03 → 2017-05-26
    Somalia DNC 02
  3. HYDROPAC 1086/17 · Missiles2017-03-27 → 2017-03-28
    Hazardous operations, space debris 0030Z to 0530Z daily 02 thru 15 apr in areas bound by: a. 44-13S 179-22E,…
  4. HYDROPAC 1058/17 · Piracy2017-03-26 → 2017-05-26
    M/V casayr ii-no 30 hijacked in vicinity 07-58N 049-53E at 241545Z mar
  5. HYDROPAC 1038/17 · Piracy2017-03-24 → 2017-03-26
    M/V hijacked in vicinity 07-58N 049-53E at 241545Z mar
  6. HYDROPAC 1037/17 · Piracy2017-03-24 → 2017-03-24
    M/V possibly hijacked in vicinity 07-58N 049-53E at 241545Z mar
  7. HYDROPAC 1035/17 · Piracy2017-03-24 → 2017-03-31
    Possible mothership activity in area within 300 miles of 07-58N 049-53E at 241200Z mar
  8. HYDROPAC 1032/17 · Surveys2017-03-24 → 2017-04-24
    Survey operations in progress until 241000Z apr 17 by M/V fugro discovery in areas: a. bound by 04-20.0S…
  9. HYDROPAC 1000/17 · Derelicts2017-03-22 → 2017-03-25
    Derelict F/V thiwanka 03 adrift in 04-10N 082-10E at 220315Z mar
  10. HYDROPAC 962/17 · Other2017-03-20 → 2017-03-27
    F/V minoli 5, blue hull, reports crewman requiring medical assistance in 00-32S 078-28E at 200300Z mar
  11. HYDROPAC 961/17 · Other2017-03-20 → 2017-03-20
    F/V visal putha, yellow hull, reports crewman requiring medical assistance in 04-22N 080-40E at 200738Z mar
  12. HYDROPAC 957/17 · Missiles2017-03-20 → 2017-03-26
    Hazardous operations, rocket re-entry 250154Z to 250312Z mar, alternate 260128Z to 260246Z mar in area bound…
  13. HYDROPAC 944/17 · Derelicts2017-03-18 → 2017-03-21
    Derelict 12.5 meter S/V jedi adrift in vicinity 41-49.43S 107-29.07E at 181015Z mar
  14. HYDROPAC 906/17 · Exercises2017-03-16 → 2017-03-16
    Hazardous operations 191157Z to 191312Z mar, alternate 1156Z to 1312Z daily 20 and 21 mar in area bound by…
  15. HYDROPAC 779/17 · Exercises2017-03-06 → 2017-03-10
    Hazardous operations 100330Z to 100630Z mar in area within five miles of 05-30N 080-30E
  16. HYDROPAC 753/17 · Icebergs2017-03-03 → 2017-03-06
    Icebergs reported in: a. 48-10S 069-37E at 021220Z mar
  17. HYDROPAC 751/17 · Icebergs2017-03-02 → 2017-03-05
    Iceberg reported in 48-04S 072-01E at 021045Z mar
  18. HYDROPAC 744/17 · Missiles2017-03-02 → 2017-03-07
    Hazardous operations, rocket launching 0402Z to 0520Z daily 07 mar thru 07 apr in area bound by 14-42S…
  19. HYDROPAC 740/17 · Derelicts2017-03-02 → 2017-03-05
    Derelict F/V ranagana 2 adrift in 05-23N 081-29E at 281230Z feb
  20. HYDROPAC 730/17 · Icebergs2017-03-01 → 2017-03-04
    Icebergs sighted in: a. 56-14S 029-47E

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