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 3159/23 · Missiles2023-10-04 → 2023-10-13
    Hazardous operations, space debris 0002Z to 0703Z daily 09 thru 15 oct in area bound by 08-53.00S…
  2. HYDROLANT 2246/23 · Missiles2023-10-04 → 2023-10-13
    Hazardous operations, space debris 0002Z to 0703Z daily 09 thru 15 oct in area bound by 08-53.00S…
  3. HYDROPAC 3134/23 · Exercises2023-10-02 → 2023-10-07
    Gunnery exercises 0700Z to 1300Z daily 04 thru 07 oct in area bound by 21-12.00S 054-57.00E, 21-19.50S…
  4. HYDROPAC 3133/23 · Exercises2023-10-02 → 2023-10-07
    Gunnery exercises 040700Z to 071300Z oct in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  5. HYDROPAC 3131/23 · Wrecks2023-10-02 → 2024-03-27
    Dangerous wreck, partially submerged in 17-17.25S 119-21.58E
  6. HYDROPAC 3120/23 · Missiles2023-09-30 → 2023-11-04
    Hazardous operations, space debris 0345Z to 0501Z daily 05 oct thru 04 nov in area bound by 10-50.00S…
  7. HYDROPAC 3118/23 · Missiles2023-09-30 → 2023-10-05
    Hazardous operations, space debris 0142Z to 0842Z daily 05 thru 11 oct in area bound by 08-53.00S…
  8. HYDROLANT 2209/23 · Missiles2023-09-30 → 2023-10-05
    Hazardous operations, space debris 0142Z to 0842Z daily 05 thru 11 oct in area bound by 08-53.00S…
  9. HYDROPAC 3110/23 · Missiles2023-09-29 → 2023-11-04
    Hazardous operations, space debris 0345Z to 0501Z daily 05 oct thru 04 nov in area bound by 10-50.00S…
  10. HYDROPAC 3072/23 · Other2023-09-26 → 2023-09-29
    Fad with 30 meter rope adrift in 14-12.50S 121-57.50E at 260730Z sep
  11. HYDROPAC 3058/23 · Exercises2023-09-25 → 2023-09-29
    Gunnery exercises 0400Z to 1800Z daily 26 thru 29 sep in area bound by 21-12.00S 054-57.00E, 21-19.50S…
  12. HYDROPAC 3044/23 · Surveys2023-09-24 → 2023-09-28
    Underwater operations in progress until further notice by M/V fugro etive in 21-23.90S 114-04.10E
  13. HYDROPAC 3037/23 · Exercises2023-09-23 → 2023-09-29
    Gunnery exercises 260400Z to 291800Z sep in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  14. HYDROPAC 3033/23 · Exercises2023-09-22 → 2023-09-29
    Gunnery exercises 0400Z to 1800Z daily 26 thru 29 sep in area bound by 21-12.00S 054-57.00E, 21-26.00S…
  15. HYDROPAC 3024/23 · Exercises2023-09-22 → 2023-09-25
    Gunnery exercises 0300Z to 1400Z daily 22 thru 25 sep in area bound by 21-12.50S 054-57.50E, 21-19.00S…
  16. HYDROLANT 2129/23 · Missiles2023-09-21 → 2023-10-05
    Hazardous operations, space debris 2220Z to 0520Z daily 28 sep thru 05 oct in area bound by 08-53.00S…
  17. HYDROPAC 3021/23 · Missiles2023-09-21 → 2023-09-30
    Hazardous operations, space debris 2220Z to 0520Z daily 28 sep thru 05 oct in area bound by 08-53.00S…
  18. HYDROPAC 3015/23 · Other2023-09-21 → 2023-09-24
    Fad with 30 meter rope adrift in 14-04.70S 122-06.00E at 210725Z sep
  19. HYDROPAC 3007/23 · Exercises2023-09-21 → 2023-09-25
    Gunnery exercises 220900Z to 221400Z and 250300Z to 250800Z sep in area bound by 21-12.00S 054-57.00E,…
  20. HYDROPAC 2988/23 · Other2023-09-19 → 2023-09-21
    Fad with 30 meter rope adrift in 14-00.00S 122-10.00E at 190549Z sep

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