Indian Ocean

IHO sea area 45 · 20° to 147° E, -60° to 10° N

in force
21
last 12 months
56
since 1997
3,589
categories
15

In force now · 21

  1. NAVAREA X 96/26 · Missiles2026-08-20
    Space debris danger area 100 nautical miles either side of a line in the Southern Ocean from Cape Darnley to Tasmania, daily 25-31 August 2026 0809-1608 UTC.
  2. AUSCOAST 279/26 · Surveys2026-08-19
    Special purpose vessel Fugro Kwilena is conducting underwater operations in area from 19-47.68S 115-12.91E to 19-57.87S 115-25.37E, requesting 1.5 nautical mile clearance.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  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 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.
  16. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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
25
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Derelicts62217%
Missiles56016%
Nav aids46713%
Surveys41211%
Other37610%
Exercises35710%
Piracy34110%
Cable ops1955%
Debris1093%
Icebergs822%
Wrecks371%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,568 cancelled

  1. HYDROPAC 2758/10 · Piracy2010-12-11 → 2010-12-24
    Piracy action group reported in 07-33S 042-05E at 111030Z dec
  2. HYDROPAC 2751/10 · Derelicts2010-12-11 → 2010-12-14
    Derelict 34 foot S/V adrift vicinity 23-40S 111-22E at 111000Z dec
  3. HYDROPAC 2743/10 · Piracy2010-12-10 → 2010-12-18
    M/V attacked in 09-56S 041-48E at 101233Z dec
  4. HYDROPAC 2737/10 · Piracy2010-12-10 → 2010-12-18
    M/V attacked in 09-57S 041-46E at 101212Z dec
  5. HYDROPAC 2691/10 · Missiles2010-12-06 → 2010-12-11
    Hazardous operations 0330Z to 1100Z daily 09 thru 11 dec in area bound by 20-45.35N 087-05.36E, 20-21.61N…
  6. HYDROPAC 2685/10 · Piracy2010-12-05 → 2010-12-18
    Possible mothership activity in 04-08N 049-28E at 051537Z dec
  7. HYDROPAC 2664/10 · Debris2010-12-03 → 2010-12-06
    Large fishing net adrift in 13-42.0S 122-00.3E at 030445Z dec
  8. HYDROPAC 2658/10 · Exercises2010-12-02 → 2010-12-07
    Hazardous operations
  9. HYDROPAC 2621/10 · Other2010-11-28 → 2010-12-11
    M/V han-de reports crewman with visual impairment in 23-00S 064-30E at 281550Z nov
  10. HYDROPAC 2606/10 · Piracy2010-11-27 → 2010-12-11
    M/V attacked in 00-39N 065-03E at 270820Z nov
  11. HYDROPAC 2582/10 · Piracy2010-11-26 → 2010-12-04
    M/V attacked in 00-09S 070-00E at 260114Z nov
  12. HYDROPAC 2540/10 · Piracy2010-11-23 → 2010-12-04
    Piracy action group sighted in 07-49N 055-53E at 230233Z nov
  13. HYDROPAC 2532/10 · Debris2010-11-22 → 2010-11-25
    20 meter log with net adrift in 11-35.9S 122-54.0E at 220725Z nov
  14. HYDROPAC 2530/10 · Piracy2010-11-22 → 2010-12-04
    M/V attacked in 01-35N 055-26E at 220545Z nov
  15. HYDROPAC 2525/10 · Piracy2010-11-21 → 2010-12-04
    Possible mothership activity in 02-43N 055-20E at 210720Z nov
  16. HYDROPAC 2524/10 · Piracy2010-11-21 → 2010-12-04
    Pirate action group in 02-41N 055-24E at 210911Z nov
  17. HYDROPAC 2518/10 · Piracy2010-11-20 → 2010-12-04
    M/V attacked in 01-07S 067-05E at 200715Z nov
  18. HYDROPAC 2499/10 · Piracy2010-11-18 → 2010-11-27
    M/V attacked in 01-18S 052-47E at 181954Z nov
  19. HYDROPAC 2494/10 · Piracy2010-11-18 → 2010-11-27
    Pirate action group in 06-12S 050-02E at 180953Z nov
  20. HYDROPAC 2489/10 · Other2010-11-17 → 2010-11-27
    M/V oosea reports crewman without vital signs in 26-16.8S 049-38.6E

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