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 3171/11 · Derelicts2011-11-10 → 2011-11-13
    Derelict F/V partially submerged and adrift in 11-36.2S 123-40.4E at 100208Z nov
  2. HYDROPAC 3169/11 · Exercises2011-11-10 → 2011-11-15
    Hazardous operations
  3. HYDROPAC 3153/11 · Derelicts2011-11-08 → 2011-11-19
    F/V jelly fish adrift in 32-58.2S 030-15.1E
  4. HYDROPAC 3106/11 · Piracy2011-11-03 → 2011-11-12
    Possible mothership activity in 05-20.0S 042-40.8E at 030655Z nov
  5. HYDROPAC 3089/11 · Nav aids2011-11-01 → 2011-11-02
    Nga chart 74510 (2ND ed)
  6. HYDROPAC 3085/11 · Piracy2011-11-01 → 2011-11-12
    F/V attacked in 01-21S 052-21E at 010936Z nov
  7. HYDROPAC 3078/11 · Piracy2011-10-31 → 2011-11-13
    F/V attacked vicinity 02-23S 049-29E on 31 oct
  8. HYDROPAC 3070/11 · Debris2011-10-31 → 2011-11-03
    13 meter long yellow object adrift in 40-15S 059-37E at 311030Z oct
  9. HYDROPAC 3056/11 · Piracy2011-10-30 → 2011-11-05
    M/V attacked in 04-20S 043-41E at 301254Z oct
  10. HYDROPAC 3055/11 · Nav aids2011-10-30 → 2011-11-03
    Nga chart 74491 (4TH ed)
  11. HYDROPAC 3020/11 · Piracy2011-10-26 → 2011-10-29
    Possible pirate vessel activity vicinity 03-45N 052-45E
  12. HYDROPAC 3005/11 · Missiles2011-10-25 → 2011-10-26
    Hazardous operations 240001Z to 252359Z oct in area bound by 21-15S 054-45E, 21-52S 055-33E, 21-52S 056-40E,…
  13. HYDROPAC 2998/11 · Other2011-10-25 → 2011-10-25
    Vessel with no navigation lights and no AIS transponder approached a manned S/V in 17-23.4S 079-57.3E at…
  14. HYDROPAC 2996/11 · Missiles2011-10-24 → 2011-10-25
    Hazardous operations 240001Z to 252359Z oct in area bound by 22-15S 054-45E, 21-52S 055-33E, 21-52S 056-40E,…
  15. HYDROPAC 2995/11 · Surveys2011-10-24 → 2011-12-16
    Underwater operations in progress until further notice by M/V sapura 3000 in 12-39.60S 124-32.70E
  16. HYDROPAC 2985/11 · Piracy2011-10-23 → 2011-10-29
    M/V attacked in 04-59N 054-29E at 230830ZZ oct
  17. HYDROPAC 2969/11 · Missiles2011-10-22 → 2011-10-24
    Hazardous operations 240001Z to 252359Z oct in area bound by 21-35S 055-30E, 21-35S 056-40E, 23-10S 056-40E,…
  18. HYDROPAC 2955/11 · Piracy2011-10-20 → 2011-10-29
    M/V attacked in 01-12S 058-32E at 201439Z oct
  19. HYDROPAC 2954/11 · Icebergs2011-10-20 → 2011-10-23
    Three icebergs reported in 48-35.77S 046-25.55E at 201353Z oct
  20. HYDROPAC 2943/11 · Icebergs2011-10-19 → 2011-10-22
    Iceberg sighted in 46-37.56S 072-00.25E at 180630Z oct

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