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 2374/10 · Piracy2010-11-05 → 2010-11-13
    M/V attacked in 05-25S 040-42E on 05 nov
  2. HYDROPAC 2348/10 · Piracy2010-11-03 → 2010-11-13
    Pirate activity in 05-30S 043-30E at 031830Z nov
  3. HYDROPAC 2346/10 · Piracy2010-11-03 → 2010-11-13
    M/V attacked in 05-15S 043-39E at 030700Z nov
  4. HYDROPAC 2345/10 · Piracy2010-11-03 → 2010-11-13
    Mothership activity vicinity 03-45S 046-45E at 030410Z nov
  5. HYDROPAC 2330/10 · Piracy2010-11-02 → 2010-11-13
    M/V attacked in 03-58.6S 043-49.0E at 020300Z nov
  6. HYDROPAC 2324/10 · Derelicts2010-11-01 → 2010-11-04
    Derelict 14 meter F/V, blue hull with yellow stripe, partially submerged and adrift in 05-51.5N 084-54.0E
  7. HYDROPAC 2315/10 · Piracy2010-10-31 → 2010-11-13
    M/V attacked in 09-57S 042-19E at 310632Z oct
  8. HYDROPAC 2304/10 · Piracy2010-10-30 → 2010-11-06
    M/V attacked in 12-12S 064-53E at 300232Z oct
  9. HYDROPAC 2296/10 · Piracy2010-10-29 → 2010-11-06
    M/V attacked in 04-29S 039-57E on 29 oct
  10. HYDROPAC 2287/10 · Piracy2010-10-28 → 2010-11-06
    M/V attacked in 04-10S 039-56E at 282201Z oct
  11. HYDROPAC 2286/10 · Piracy2010-10-28 → 2010-10-29
    Two F/V hijacked vicinity denis island (03-48S 055-40E) at 282011Z oct
  12. HYDROPAC 2280/10 · Cable ops2010-10-28 → 2010-11-09
    Seismic survey 30 oct thru 08 nov by M/V hakuhou maru towing 1400 meter long cable along tracklines between:…
  13. HYDROPAC 2244/10 · Piracy2010-10-26 → 2010-11-06
    M/V attacked in 09-26S 041-22E at 261515Z oct
  14. HYDROPAC 2225/10 · Piracy2010-10-25 → 2010-11-13
    Vessel hijacked 00-54S 043-08E at 231311Z oct
  15. HYDROPAC 2223/10 · Piracy2010-10-24 → 2010-11-13
    M/V pirated in 03-29N 059-35E at 240542Z oct
  16. HYDROPAC 2220/10 · Piracy2010-10-23 → 2010-11-06
    M/V attacked in 04-14S 041-19E at 231235Z oct
  17. HYDROPAC 2201/10 · Derelicts2010-10-22 → 2010-10-25
    Derelict M/V attalya adrift vicinity 38-53.83S 023-42.64E
  18. HYDROPAC 2200/10 · Piracy2010-10-21 → 2010-11-06
    M/V attacked in 04-20S 040-25E at 211600Z oct
  19. HYDROPAC 2190/10 · Piracy2010-10-21 → 2010-11-06
    M/V attacked in 09-45S 039-56E at 210622Z oct
  20. HYDROPAC 2188/10 · Piracy2010-10-21 → 2010-11-06
    Possible mothership activity in 07-17N 050-01E at 202303Z 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.