Indian Ocean

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

in force
21
last 12 months
28
since 1997
3,524
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
26

By month (all years)

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

By category · since 1997

Derelicts62118%
Missiles54515%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,503 cancelled

  1. HYDROPAC 1196/14 · Derelicts2014-04-26 → 2014-04-29
    Derelict 13 meter M/V elkin, partially submerged and adrift in 32-43.48S 114-36.20E at 261049Z apr
  2. HYDROPAC 1171/14 · Missiles2014-04-24 → 2014-04-30
    Hazardous operations 0320Z to 0537Z daily 29 apr thru 29 may in area bound by 20-07S 088-25E, 20-10S…
  3. HYDROPAC 1091/14 · Missiles2014-04-17 → 2014-04-18
    Hazardous operations 181925Z to 181957Z apr, alternate 191902Z to 191934Z and 221751Z to 221823Z apr in area…
  4. HYDROPAC 1080/14 · Missiles2014-04-16 → 2014-04-17
    Hazardous operations 182157Z to 182217Z apr, alternate 191902Z to 191934Z and 221751Z to 221823Z apr in area…
  5. HYDROPAC 1059/14 · Derelicts2014-04-15 → 2014-04-18
    Derelict 12 meter F/V partially submerged and adrift vicinity 00-25.38S 089-34.76E
  6. HYDROPAC 1010/14 · Nav aids2014-04-09 → 2014-05-10
    Two mile berth requested
  7. HYDROPAC 1001/14 · Missiles2014-04-09 → 2014-04-16
    Hazardous operations 142157Z to 142217Z apr, alternate 182024Z to 182044Z apr in area bound by 28-16S…
  8. HYDROPAC 906/14 · Derelicts2014-03-31 → 2014-04-03
    Derelict vessel adrift in 27-36.3S 039-24.2E
  9. HYDROPAC 860/14 · Derelicts2014-03-27 → 2014-03-30
    Derelict 30 meter vessel, blue and green hull, partially submerged and adrift in 10-19S 065-51E at 260655Z mar
  10. HYDROPAC 833/14 · Exercises2014-03-25 → 2014-03-26
    Gunnery exercises 270800Z to 271400Z mar in area bound by 21-12.0S 054-57.0E, 21-26.0S 056-02.5E, 21-31.2S…
  11. HYDROPAC 778/14 · Cable ops2014-03-19 → 2014-03-20
    Pipeline operations in progress until further notice by M/V highland navigator and M/V mermaid inscription…
  12. HYDROPAC 773/14 · Missiles2014-03-19 → 2014-03-24
    Hazardous operations 0630Z to 1030Z daily 22, 24 and 26 mar in area bound by 17-40.15N 083-35.80E, 15-00.68N…
  13. HYDROPAC 746/14 · Missiles2014-03-16 → 2014-03-19
    Hazardous operations 0630Z to 1030Z daily 20, 22 and 24 mar in area bound by 17-40.15N 083-35.80E, 15-00.68N…
  14. HYDROPAC 741/14 · Cable ops2014-03-15 → 2014-03-16
    Pipeline operations 152300Z to 160400Z mar by M/V highland navigator in 19-48.34S 114-36.30E
  15. HYDROPAC 728/14 · Nav aids2014-03-14 → 2014-03-15
    Australia-southwest Coast
  16. HYDROPAC 687/14 · Missiles2014-03-11 → 2014-03-13
    Hazardous operations 160940Z to 160959Z mar, alternate 170918Z to 170937Z mar in area bound by 28-16S…
  17. HYDROPAC 647/14 · Exercises2014-03-06 → 2014-03-06
    Gunnery exercises 060600Z to 061200Z mar in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  18. HYDROPAC 620/14 · Exercises2014-03-04 → 2014-03-06
    Gunnery exercises 060600Z to 061200Z mar in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  19. HYDROPAC 614/14 · Piracy2014-03-03 → 2014-03-15
    Possible mothership activity in 01-34.4S 041-48.5E at 031400Z mar
  20. HYDROPAC 609/14 · Missiles2014-03-03 → 2014-03-07
    Hazardous operations 0630Z to 1030Z daily 08, 10, 12 and 14 mar in area bound by 17-40.15N 083-35.80E,…

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