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 2684/17 · Missiles2017-08-08 → 2017-08-09
    Hazardous operations space debris 131744Z to 131815Z aug, alternate 141718Z to 141749Z aug in area bound by…
  2. HYDROPAC 2680/17 · Other2017-08-07 → 2017-08-25
    F/V itsas txori reports crewman with foot injury in 02-41N 051-00E at 071100Z aug
  3. HYDROPAC 2630/17 · Nav aids2017-08-03 → 2017-08-03
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  4. HYDROPAC 2609/17 · Nav aids2017-08-01 → 2017-08-01
    Perth dgps station 31-47.9S 115-56.0E inoperative
  5. HYDROPAC 2567/17 · Other2017-07-28 → 2017-07-30
    Fishing nets marked by floats, adrift in 20-58.0S 055-06.0E 2 cancel this msg 301700Z jul 17
  6. HYDROPAC 2560/17 · Exercises2017-07-28 → 2017-08-03
    Hazardous operations 0407Z to 0524Z daily 02 aug thru 02 sep in area bound by 07-00S 090-05E, 18-45S…
  7. HYDROPAC 2553/17 · Exercises2017-07-27 → 2017-08-01
    Gunnery exercises 010900Z to 011400Z aug in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  8. HYDROPAC 2495/17 · Surveys2017-07-21 → 2017-11-24
    Underwater operations in progress until further notice by M/V deep orient in 13-47.20S 123-19.05E
  9. HYDROPAC 2457/17 · Other2017-07-17 → 2017-07-20
    Ten mile long fishing line, marked by three red buoys, adrift in 21-31.51S 055-20.51E
  10. HYDROPAC 2437/17 · Other2017-07-15 → 2017-07-17
    Ten mile long fishing line, marked by red buoys, adrift in 21-31.31S 055-20.31E
  11. HYDROPAC 2419/17 · Derelicts2017-07-14 → 2017-07-17
    Derelict F/V apekshana vass adrift in 04-24N 079-59E at 130300Z jul
  12. HYDROPAC 2416/17 · Derelicts2017-07-13 → 2017-07-16
    Derelict F/V hsiang fuh no 6 adrift in vicinity 28-25.3S 037-18.7E
  13. HYDROPAC 2405/17 · Surveys2017-07-12 → 2017-08-18
    Survey operations in progress until 181830Z aug by M/V sonne towing 3300 meter long cable in area bound by…
  14. HYDROPAC 2402/17 · Missiles2017-07-12 → 2017-07-17
    Hazardous operations space debris 1500Z to 1630Z daily 14 thru 17 jul in area bound by 51-03S 112-27E,…
  15. HYDROPAC 2398/17 · Missiles2017-07-11 → 2017-07-12
    Hazardous operations space debris 1500Z to 1600Z daily 14 thru 17 jul in area bound by 51-03S 112-27E,…
  16. HYDROPAC 2377/17 · Derelicts2017-07-09 → 2017-07-12
    Derelict F/V hsiang fun no 6 adrift in vicinity 27-59.0S 038-33.6E
  17. HYDROPAC 2345/17 · Wrecks2017-07-06 → 2018-09-07
    M/V theresa arctic aground in 03-39.25S 039-53.06E
  18. HYDROPAC 2286/17 · Derelicts2017-06-30 → 2017-07-03
    Derelict vessel adrift in 11-32S 047-18E
  19. HYDROPAC 2215/17 · Debris2017-06-24 → 2017-06-27
    Eight meter long object adrift in 15-12.6S 120-37.8E at 240900Z jun
  20. HYDROPAC 2214/17 · Debris2017-06-24 → 2017-06-27
    Eight meter partially submerged tree in 15-22.08S 120-42.85E at 240847Z jun

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