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 985/23 · Missiles2023-03-23 → 2023-03-26
    Hazardous operations, rocket launching 260100Z to 260500Z mar: a. in area within ten miles of 13-43.20N…
  2. HYDROLANT 618/23 · Missiles2023-03-20 → 2023-03-25
    Hazardous operations, space debris 1428Z to 2132Z daily 24 thru 30 mar in area bound by 30-58.00S…
  3. HYDROPAC 934/23 · Missiles2023-03-20 → 2023-03-25
    Hazardous operations, space debris 1428Z to 2132Z daily 24 thru 30 mar in area bound by 30-58.00S…
  4. HYDROPAC 927/23 · Missiles2023-03-20 → 2023-03-21
    Hazardous operations, space debris 210800Z to 211400Z mar in area bound by 19-55.00S 087-01.00E, 27-00.00S…
  5. HYDROPAC 924/23 · Surveys2023-03-20 → 2023-05-22
    Underwater operations in progress until further notice by three underwater gliders in area bound by…
  6. HYDROPAC 903/23 · Surveys2023-03-18 → 2023-03-19
    Survey operations 190200Z to 191300Z mar by M/V botafogo in vicinity 19-40.30S 054-10.55E
  7. HYDROPAC 849/23 · Other2023-03-14 → 2023-03-17
    Fish haven with rope adrift in vicinity 09-50.00S 105-31.70E at 140746Z mar
  8. HYDROPAC 847/23 · Derelicts2023-03-14 → 2023-03-17
    Partially submerged vessel with six meter rope attached adrift in vicinity 13-05.26S 125-53.17E at 140410Z mar
  9. HYDROPAC 846/23 · Missiles2023-03-14 → 2023-03-15
    Hazardous operations, space debris 151100Z to 151800Z mar in area within 22 miles of trackline joining…
  10. HYDROPAC 832/23 · Missiles2023-03-12 → 2023-03-17
    Hazardous operations, space debris 150109Z to 150146Z, alternate 160047Z to 160124Z and 172359Z to 170036Z mar
  11. HYDROPAC 806/23 · Nav aids2023-03-10 → 2023-03-10
    RACON at port hedland C1 light 19-59.49S 118-26.17E inoperative
  12. HYDROPAC 783/23 · Surveys2023-03-08 → 2023-03-15
    Survey operations 11 thru 14 mar by M/V marion dufresne in: a. 20-11.00S 054-05.00E
  13. HYDROPAC 773/23 · Nav aids2023-03-07 → 2023-03-07
    Ile royale light 05-17.22N 052-35.52E unlit
  14. HYDROPAC 758/23 · Missiles2023-03-06 → 2023-03-12
    Hazardous operations, space debris 2045Z to 2200Z daily 09 thru 15 mar in area bound by 20-58.00S…
  15. HYDROPAC 754/23 · Debris2023-03-06 → 2023-03-07
    Eight meter log adrift in 08-24.87S 102-12.28E at 060642Z mar
  16. HYDROPAC 744/23 · Debris2023-03-06 → 2023-03-09
    Eight meter log adrift in vicinity 08-24.87S 102-12.28E at 060642Z mar
  17. HYDROPAC 693/23 · Exercises2023-03-02 → 2023-03-03
    Gunnery exercises 0200Z to 1200Z daily 02 and 03 mar in area bound by 21-12.00S 054-57.00E, 21-39.00S…
  18. HYDROPAC 692/23 · Debris2023-03-02 → 2023-03-05
    Dcp buoy adrift in vicinity 22-09.50S 055-17.90E
  19. HYDROPAC 633/23 · Surveys2023-02-24 → 2023-03-05
    Underwater operations 25 feb thru 04 mar by M/V hakuhomaru in vicinity: a. 00-00.06N 090-14.96E
  20. HYDROPAC 630/23 · Surveys2023-02-24 → 2026-08-14
    Underwater operations are in progress off Mauritius until further notice; a two-mile berth is requested.

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