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 1247/11 · Piracy2011-04-24 → 2011-04-30
    Pirate action group in 12-13S 060-24E at 240615Z apr
  2. HYDROPAC 1245/11 · Piracy2011-04-24 → 2011-04-30
    M/V attacked in 04-12.7S 047-43.3E at 240300Z apr
  3. HYDROPAC 1241/11 · Piracy2011-04-23 → 2011-04-30
    M/V attacked in 02-51S 048-40E at 231200Z apr
  4. HYDROPAC 1177/11 · Derelicts2011-04-16 → 2011-04-19
    Derelict F/V partially submerged and adrift in 13-04.68S 122-15.83E at 160918Z apr
  5. HYDROPAC 1166/11 · Exercises2011-04-14 → 2011-04-15
    Gunnery exercises 151100Z to 151400Z apr within 30 miles of 02-05S 052-59E
  6. HYDROPAC 1133/11 · Derelicts2011-04-12 → 2011-04-15
    Derelict F/V partially submerged and adrift in 13-32-35S 122-26-56E at 120523Z apr
  7. HYDROPAC 1083/11 · Derelicts2011-04-07 → 2011-04-10
    Derelict 22 meter F/V partially submerged and adrift in 13-47S 122-39E at 070351Z apr
  8. HYDROPAC 1059/11 · Derelicts2011-04-05 → 2011-04-08
    Derelict F/V partially submerged and adrift in 13-50.48S 122-08.25E at 050434Z apr
  9. HYDROPAC 1044/11 · Nav aids2011-04-03 → 2011-05-28
    Nga chart 74012 (10TH ed)
  10. HYDROPAC 1041/11 · Piracy2011-04-03 → 2011-04-09
    M/V attacked in 05-35S 040-20E at 030205Z apr
  11. HYDROPAC 1017/11 · Exercises2011-04-01 → 2011-04-04
    Hazardous operations
  12. HYDROPAC 962/11 · Piracy2011-03-27 → 2011-04-01
    Pirate action group, white F/V, reported along trackline between 02-30S 088-00E and 05-00S 082-30E
  13. HYDROPAC 960/11 · Piracy2011-03-26 → 2011-03-27
    Pirate action group in 02-27S 088-00E at 250225Z mar
  14. HYDROPAC 918/11 · Nav aids2011-03-23 → 2011-03-29
    Nga chart 74485 (3RD ed)
  15. HYDROPAC 882/11 · Piracy2011-03-21 → 2011-04-02
    M/V attacked in 03-47N 053-33E at 210846Z mar
  16. HYDROPAC 862/11 · Other2011-03-19 → 2011-03-20
    Vessel with doctor requested to provide medical assistance within 15 hours of vicinity 12-00S 120-00E
  17. HYDROPAC 860/11 · Piracy2011-03-19 → 2011-03-26
    Possible mothership activity in 03-36S 042-56E at 191524Z mar
  18. HYDROPAC 825/11 · Debris2011-03-17 → 2011-03-20
    12 mile long fishing line with buoys adrift vicinity 21-19.9S 055-01.0E
  19. HYDROPAC 821/11 · Piracy2011-03-16 → 2011-03-16
    Pirate action group in 10-07N 051-25E at 161057Z mar
  20. HYDROPAC 798/11 · Nav aids2011-03-14 → 2011-03-15
    Nga chart 74492 (7TH ed)

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