Indian Ocean

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

in force
23
last 12 months
22
since 1997
3,518
categories
15

In force now · 23

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. AUSCOAST 255/26 · Surveys2026-07-27
    Vessel Fugro Kwilena is conducting underwater operations in an area bounded by 19-56.69 S to 20-26.06 S and 114-45.09 E to 115-30.10 E, requesting 1.5 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
    Semi-submerged mooring lightbuoy fl.w in 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
    Semi-submerged mooring lightbuoy fl.w in 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%
Surveys37711%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,495 cancelled

  1. HYDROPAC 2394/22 · Exercises2022-08-31 → 2022-09-02
    Gunnery exercises 021000Z to 021400Z sep in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  2. HYDROPAC 2389/22 · Exercises2022-08-31 → 2022-09-02
    Gunnery exercise 021000Z to 021400Z sep in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  3. HYDROPAC 2387/22 · Exercises2022-08-31 → 2022-09-02
    Gunnery exercises 021000Z to 021400Z sep in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  4. HYDROPAC 2354/22 · Other2022-08-26 → 2022-09-16
    F/V zumaya dous reports crewman requiring medical assistance in 30-17.00S 042-15.00E at 261500Z aug
  5. HYDROPAC 2342/22 · Surveys2022-08-26 → 2022-10-03
    Underwater operations in progress until further notice by submersible in area bound by 10-06.00S 105-12.00E,…
  6. HYDROPAC 2304/22 · Exercises2022-08-22 → 2022-08-25
    Gunnery exercises 241000Z to 251800Z aug in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  7. HYDROPAC 2282/22 · Exercises2022-08-20 → 2022-08-23
    Gunnery exercises 230200Z to 231200Z aug in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  8. HYDROPAC 2199/22 · Surveys2022-08-11 → 2022-10-29
    Underwater operations in progress until further notice by M/V pride in area bound by 19-50.55S 114-30.29E,…
  9. HYDROPAC 2129/22 · Other2022-08-04 → 2022-08-07
    Ten meter bamboo with ten meter rope attached adrift in vicinity 13-04.00S 122-08.00E at 040513Z aug
  10. HYDROPAC 2064/22 · Exercises2022-07-29 → 2022-08-01
    Gunnery exercises 010800Z to 011500Z aug in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  11. HYDROPAC 2040/22 · Other2022-07-26 → 2022-07-29
    Large orange cylindrical object with rope adrift in vicinity 12-49.00S 123-57.00E at 260427Z jul
  12. HYDROPAC 1997/22 · Other2022-07-22 → 2022-07-25
    Large orange cylindrical object with rope adrift in vicinity 13-10.46S 123-59.26E at 220558Z jul
  13. HYDROPAC 1988/22 · Other2022-07-21 → 2022-07-22
    Large orange cylindrical object with rope adrift in vicinity 13-20.30S 124-04.70E at 210446Z jul
  14. HYDROPAC 1926/22 · Derelicts2022-07-15 → 2022-07-18
    Derelict seven meter vessel, white hull, adrift in vicinity 13-28.23S 122-57.28E at 150753Z jul
  15. HYDROPAC 1919/22 · Missiles2022-07-15 → 2022-07-20
    Hazardous operation, space debris 2340Z to 0200Z daily 15 thru 19 jul in area bound by 53-15.00S 146-52.00E,…
  16. HYDROPAC 1898/22 · Other2022-07-12 → 2022-07-15
    Large orange cylindrical object with rope adrift in vicinity 13-20.58S 121-57.93E at 120300Z jul
  17. HYDROPAC 1842/22 · Surveys2022-07-07 → 2022-07-17
    Underwater operations in progress until further notice by M/V fugro maali in area bound by 19-55.00S…
  18. HYDROPAC 1841/22 · Surveys2022-07-07 → 2022-07-07
    Underwater operations in progress until further notice by M/V fugro maali in area bound by 19-55.00S…
  19. HYDROPAC 1766/22 · Surveys2022-06-27 → 2022-07-08
    1.SURVEY operations in progress until 07 jul by M/V marion dufresne in area bound by 11-18.00S 045-36.00E,…
  20. HYDROPAC 1696/22 · Other2022-06-20 → 2022-06-23
    Two meter fad with ten meter rope adrift in 13-47.90S 123-21.90E at 200715Z 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.