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
    A semi-submerged mooring light buoy with a flashing white light is at 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
    A semi-submerged mooring light buoy with a flashing white light is at 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 2864/21 · Surveys2021-10-08 → 2021-10-09
    Underwater operations in progress until further notice by M/V warrego in 19-58.32S 116-20.93E
  2. HYDROPAC 2858/21 · Nav aids2021-10-07 → 2021-10-29
    Browse island light 14-06.5S 123-32.9E unlit
  3. HYDROPAC 2857/21 · Nav aids2021-10-07 → 2021-10-31
    RACON at browse island light 14-06.5S 123-32.9E inoperative
  4. HYDROPAC 2823/21 · Nav aids2021-10-05 → 2021-10-06
    Cape leeuwin light 34-22-29S 115-08-12E unreliable
  5. HYDROPAC 2818/21 · Containers2021-10-04 → 2021-10-07
    Containers adrift in vicinity 31-22.2S 033-12.2E
  6. HYDROPAC 2808/21 · Nav aids2021-10-04 → 2021-10-27
    Adele island light 15-30.6S 123-09.5E unreliable
  7. HYDROPAC 2789/21 · Icebergs2021-10-01 → 2021-10-04
    Iceberg reported in 49-04.84S 066-18.80E
  8. HYDROPAC 2772/21 · Cable ops2021-09-30 → 2021-10-19
    Eastern indian ocean DNC 03
  9. HYDROPAC 2771/21 · Cable ops2021-09-30 → 2021-09-30
    Cable operations 04 thru 20 oct by cableship teneo in vicinity 09-08.7S 104-14.1E
  10. HYDROPAC 2747/21 · Icebergs2021-09-28 → 2021-10-01
    50 meter iceberg reported adrift in 49-12.22S 064-58.36E
  11. HYDROPAC 2746/21 · Surveys2021-09-28 → 2021-09-30
    Underwater operations in progress until further notice by M/V maersk master in vicinity 21-23.2S 114-04.6E
  12. HYDROPAC 2719/21 · Surveys2021-09-25 → 2021-12-30
    Underwater operations in progress until further notice by M/V empress in area bound by 15-00.88S 123-54.46E,…
  13. HYDROPAC 2707/21 · Surveys2021-09-23 → 2021-09-28
    Underwater operations in progress until further notice by M/V maersk master in position 21-23.2S 114-04.6E
  14. HYDROPAC 2702/21 · Derelicts2021-09-23 → 2021-09-26
    Derelict 12 meter vessel adrift in vicinity 11-37.6S 123-49.4E at 230538Z sep
  15. HYDROPAC 2693/21 · Derelicts2021-09-22 → 2021-09-25
    Derelict 11 meter S/V adrift in vicinity 11-51.83S 124-10.20E at 220808Z sep
  16. HYDROPAC 2669/21 · Debris2021-09-19 → 2021-09-21
    Eight meter fishing net adrift in 14-56.2S 121-52.3E at 190337Z sep
  17. HYDROPAC 2627/21 · Derelicts2021-09-15 → 2021-09-16
    Derelict 11 meter S/V adrift in vicinity 12-35.22S 125-11.18E at 150403Z sep
  18. HYDROPAC 2596/21 · Derelicts2021-09-13 → 2021-09-16
    Derelict 11 meter S/V adrift in vicinity 14-46S 124-41E at 130534Z sep
  19. HYDROPAC 2588/21 · Derelicts2021-09-12 → 2021-09-15
    Derelict 11 meter S/V adrift in 12-48.32S 124-30.05E at 120539Z sep
  20. HYDROPAC 2576/21 · Derelicts2021-09-11 → 2021-09-12
    Derelict 11 meter S/V adrift in vicinity 12-40.3S 124-24.0E at 110846Z 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.