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 2734/22 · Missiles2022-10-01 → 2022-10-07
    Hazardous operations, space debris 051635Z to 051710Z oct, alternate 061613Z to 061648Z and 071547Z to…
  2. HYDROPAC 2732/22 · Nav aids2022-10-01 → 2022-10-03
    Cape leeuwin light 34-22.5S 115-08.2E unlit
  3. HYDROPAC 2687/22 · Nav aids2022-09-28 → 2022-10-24
    North west cape light 21-48.37S 114-09.61E unlit
  4. HYDROPAC 2685/22 · Exercises2022-09-27 → 2022-09-29
    Hazardous operations 291030Z to 291930Z sep in area bound by 01-20.00N 089-30.00E, 01-20.00N 090-30.00E,…
  5. HYDROPAC 2653/22 · Cable ops2022-09-24 → 2022-10-03
    Cable operations in progress until further notice by M/V reliance in area bound by 31-44.60S 114-47.30E,…
  6. HYDROPAC 2633/22 · Derelicts2022-09-22 → 2022-09-25
    45 foot F/V lakshitha 5, blue hull, and 40 foot F/V lakshitha 4, green hull, disabled and adrift due to…
  7. HYDROPAC 2601/22 · Derelicts2022-09-19 → 2022-09-22
    Derelict eight meter raft adrift in 13-37.10S 123-39.50E at 191147Z sep
  8. HYDROPAC 2589/22 · Nav aids2022-09-18 → 2022-11-07
    12 six meter buoys, yellow, fl w 3 sec, established in area within one mile of 21-32.70S 114-05.70E
  9. HYDROPAC 2586/22 · Derelicts2022-09-18 → 2022-09-21
    Derelict eight meter raft adrift in 13-37.23S 123-21.85E at 180751Z sep
  10. HYDROPAC 2578/22 · Surveys2022-09-17 → 2022-10-29
    Underwater operations in progress until further notice by M/V fugro maali in area bound by 19-57.50S…
  11. HYDROPAC 2536/22 · Nav aids2022-09-13 → 2022-09-19
    North west cape light 21-48.37S 114-09.61E unlit
  12. HYDROPAC 2535/22 · Surveys2022-09-13 → 2022-09-15
    Underwater operations in progress until further notice by M/V fugro etive in: a. 20-28.98S 115-42.73E
  13. HYDROPAC 2533/22 · Derelicts2022-09-13 → 2022-09-16
    Derelict vessel adrift in vicinity 07-08.20S 091-07.32E at 130534Z sep
  14. HYDROPAC 2448/22 · Other2022-09-05 → 2022-09-08
    Three meter fad with rope adrift in 13-23.95S 121-44.45E at 050623Z sep
  15. HYDROPAC 2441/22 · Derelicts2022-09-04 → 2022-09-06
    F/V sandali 01 disabled and adrift due to engine failure in 00-14.00S 069-37.00E at 040100Z sep
  16. HYDROPAC 2439/22 · Other2022-09-04 → 2022-09-07
    Large orange cylindrical fad with rope adrift in vicinity 13-22.80S 121-48.70E at 040849Z sep
  17. HYDROPAC 2422/22 · Missiles2022-09-02 → 2022-09-08
    Hazardous operations, space debris 0031Z to 0445Z daily 05 thru 10 sep in area bound by 26-12.00S…
  18. HYDROPAC 2415/22 · Other2022-09-02 → 2022-09-04
    Large orange cylindrical object with rope adrift in vicinity 13-20.10S 121-59.40E at 020819Z sep
  19. HYDROPAC 2405/22 · Exercises2022-09-01 → 2022-09-01
    Gunnery exercises 021000Z to 021400Z sep in area bound by 21-12.00S 054-57.90E, 21-19.00S 054-25.50E,…
  20. HYDROPAC 2403/22 · Derelicts2022-09-01 → 2022-09-03
    1.VESSEL adrift in 06-10.98S 091-51.05E at 310550Z aug

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