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 602/13 · Surveys2013-03-01 → 2013-05-14
    Survey operations in progress until further notice by M/V polarcus alima along trackline between 16-20S…
  2. HYDROPAC 585/13 · Nav aids2013-02-27 → 2013-02-27
    Australia-northwest Coast
  3. HYDROPAC 568/13 · Nav aids2013-02-26 → 2013-02-27
    Australia-northwest Coast
  4. HYDROPAC 567/13 · Missiles2013-02-25 → 2013-02-28
    Hazardous operations in progress until 27 feb in area bound by 30-00S 074-00E, 31-00S 077-00E, 41-00S…
  5. HYDROPAC 498/13 · Derelicts2013-02-19 → 2013-02-22
    Derelict vessel partially submerged and adrift vicinity 02-18N 048-02E at 181342Z feb
  6. HYDROPAC 497/13 · Derelicts2013-02-19 → 2013-02-22
    Derelict vessel partially submerged and adrift vicinity 02-35S 048-15E at 181000Z feb
  7. HYDROPAC 489/13 · Piracy2013-02-19 → 2013-03-02
    M/V attacked in 07-14.4N 052-17.2E at 181645Z feb
  8. HYDROPAC 460/13 · Derelicts2013-02-15 → 2013-02-18
    Derelict ten meter vessel, wooden hull, partially submerged and adrift in 09-07.4S 106-29.6E at 150629Z feb
  9. HYDROPAC 439/13 · Derelicts2013-02-14 → 2013-02-17
    Derelict vessel, wooden hull, on fire in 10-19.6S 105-29.8E at 130906Z feb
  10. HYDROPAC 438/13 · Derelicts2013-02-13 → 2013-02-16
    40 meter vessel, white hull, partially submerged and adrift in 23-16S 053-58E
  11. HYDROPAC 403/13 · Cable ops2013-02-10 → 2013-02-12
    Seismic survey in progress until further notice by M/V aquila explorer towing six mile long cable along…
  12. HYDROPAC 401/13 · Other2013-02-10 → 2013-02-10
    Australia-northwest Coast
  13. HYDROPAC 399/13 · Nav aids2013-02-09 → 2013-02-16
    Australia-northwest Coast
  14. HYDROPAC 340/13 · Nav aids2013-02-02 → 2013-06-18
    Cancel HYDROPAC 233/13, aid restored
  15. HYDROPAC 231/13 · Derelicts2013-01-23 → 2013-01-26
    Derelict 15 meter vessel, white hull, adrift in 12-36.2S 124-35.5E at 230700Z jan
  16. HYDROPAC 193/13 · Derelicts2013-01-20 → 2013-01-23
    Derelict vessel adrift in 07-43S 105-23E at 192005Z jan
  17. HYDROPAC 155/13 · Derelicts2013-01-16 → 2013-01-19
    Derelict 100 meter barge adrift vicinity 21-32S 114-44E
  18. HYDROPAC 140/13 · Derelicts2013-01-14 → 2013-01-17
    Derelict vessel partially submerged and adrift vicinity 04-12N 048-22E at 131515Z jan
  19. HYDROPAC 132/13 · Wrecks2013-01-13 → 2013-02-27
    Diego Garcia
  20. HYDROPAC 104/13 · Nav aids2013-01-10 → 2013-01-11
    Australia-northwest Coast

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