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. HYDROLANT 2092/23 · Missiles2023-09-18 → 2023-09-25
    Hazardous operations, space debris 2333Z to 0633Z daily 23 thru 30 sep in area bound by 08-53.00S…
  2. HYDROPAC 2977/23 · Missiles2023-09-18 → 2023-09-25
    Hazardous operations, space debris 2333Z to 0633Z daily 23 thru 30 sep in area bound by 08-53.00S…
  3. HYDROPAC 2958/23 · Missiles2023-09-15 → 2023-09-20
    Hazardous operations, space debris 0139Z to 0840Z daily 19 thru 25 sep in area bound by 08-53.00S…
  4. HYDROLANT 2068/23 · Missiles2023-09-15 → 2023-09-20
    Hazardous operations, space debris 0139Z to 0840Z daily 19 thru 25 sep in area bound by 08-53.00S…
  5. HYDROPAC 2916/23 · Missiles2023-09-11 → 2023-09-22
    Hazardous operations, space debris 2359Z to 0658Z daily 14 thru 21 sep in area bound by 08-53.00S…
  6. HYDROLANT 2040/23 · Missiles2023-09-11 → 2023-09-22
    Hazardous operations, space debris 2359Z to 0658Z daily 14 thru 21 sep in area bound by 08-53.00S…
  7. HYDROPAC 2914/23 · Debris2023-09-11 → 2023-09-14
    Debris adrift in vicinity 08-45.50S 104-02.40E at 110534Z sep
  8. HYDROLANT 2033/23 · Missiles2023-09-09 → 2023-09-21
    Hazardous operations, space debris 2359Z to 0658Z daily 14 thru 20 sep in area bound by 08-53.00S…
  9. HYDROPAC 2905/23 · Missiles2023-09-09 → 2023-09-21
    Hazardous operations, space debris 2359Z to 0658Z daily 14 thru 20 sep in area bound by 08-53.00S…
  10. HYDROPAC 2881/23 · Surveys2023-09-07 → 2024-01-25
    Underwater operations in progress until further notice by M/V bluey in area bound by 30-18.00S 114-04.00E,…
  11. HYDROPAC 2880/23 · Surveys2023-09-07 → 2024-01-25
    Underwater operations in progress until further notice by underwater glider in area bound by 30-20.00S…
  12. HYDROPAC 2827/23 · Missiles2023-09-03 → 2023-09-09
    Hazardous operations, space debris 2258Z to 0616Z daily 08 thru 15 sep in area bound by 08-52.00S…
  13. HYDROLANT 1979/23 · Missiles2023-09-03 → 2023-09-09
    Hazardous operations, space debris 2258Z to 0616Z daily 08 thru 15 sep in area bound by 08-52.00S…
  14. HYDROPAC 2816/23 · Missiles2023-09-01 → 2023-09-01
    Hazardous operations, space debris 2233Z to 0533Z daily 03 thru 10 sep in area bound by 08-52.00S…
  15. HYDROLANT 1963/23 · Missiles2023-09-01 → 2023-09-01
    Hazardous operations, space debris 2233Z to 0533Z daily 03 thru 10 sep in area bound by 08-52.00S…
  16. HYDROPAC 2813/23 · Nav aids2023-09-01 → 2024-01-25
    Cape st cricq light 25-16.18S 113-04.59E unlit
  17. HYDROPAC 2789/23 · Nav aids2023-08-30 → 2023-08-31
    Cape naturaliste light 33-32.23S 115-01.15E unlit
  18. HYDROPAC 2781/23 · Missiles2023-08-29 → 2023-09-01
    Hazardous operations, space debris 2258Z to 0557Z daily 31 aug thru 07 sep in area bound by 08-53.00S…
  19. HYDROLANT 1937/23 · Missiles2023-08-29 → 2023-09-01
    Hazardous operations, space debris 2258Z to 0557Z daily 31 aug thru 07 sep in area bound by 08-53.00S…
  20. HYDROPAC 2775/23 · Missiles2023-08-29 → 2023-09-11
    Hazardous operations, space debris 2233Z to 0533Z daily 03 thru 10 sep in area bound by 08-52.0S 092-27.0E,…

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