Indian Ocean

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

in force
23
last 12 months
23
since 1997
3,519
categories
15

In force now · 23

  1. 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.
  2. 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.
  3. NAVAREA X 94/26 · Missiles2026-08-15
    Space debris danger area is in effect from Cape Darnely to Tasmania, daily 1525-2235 UTC, 20-26 August 2026.
  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. NAVAREA X 91/26 · Missiles2026-08-05
    Space debris danger area from Cape Darnley to Tasmania, 80 nautical miles either side of centreline, daily between 1455 and 2205 UTC, 10 to 16 August 2026.
  13. 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.
  14. 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.
  15. 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.
  16. HYDROPAC 2157/26 · Surveys2026-07-27
    Underwater operations are underway by the vessel Fugro Kwilena in the eastern Indian Ocean off Australia until further notice. A two-mile berth is requested.
  17. 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.
  18. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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%
Missiles54215%
Nav aids46113%
Surveys37811%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,496 cancelled

  1. HYDROPAC 1852/20 · Missiles2020-06-22 → 2020-06-25
    Hazardous operations, space debris 252305Z to 252343Z jun, alternate 262244Z to 262322Z jun in area bound by…
  2. HYDROPAC 1820/20 · Other2020-06-19 → 2020-07-03
    Fisherman missing in vicinity 08-20S 111-50E
  3. HYDROPAC 1812/20 · Cable ops2020-06-19 → 2020-06-23
    Cable operations in progress until 22 jun in vicinity 20-34.71S 054-23.08E
  4. HYDROPAC 1799/20 · Missiles2020-06-18 → 2020-06-22
    Hazardous operations, space debris 232348Z to 240025Z jun, alternate 242330Z to 250007Z jun in area bound by…
  5. HYDROPAC 1772/20 · Missiles2020-06-15 → 2020-07-19
    Hazardous operations, space debris 190359Z jun to 190516Z jul in area bound by 25-25S 088-30E, 07-46S…
  6. HYDROPAC 1757/20 · Missiles2020-06-14 → 2020-06-19
    Hazardous operations, space debris 190359Z to 190516Z jun in area bound by 25-25S 088-30E, 07-46S 092-12E,…
  7. HYDROPAC 1720/20 · Cable ops2020-06-10 → 2020-06-18
    Cable operations 12 thru 25 jun by cableship teliri in area bound by 20-55.3S 055-17.0E, 20-46.0S 054-52.0E,…
  8. HYDROPAC 1658/20 · Surveys2020-06-04 → 2020-06-07
    Underwater operations in progress until further notice by M/V skandi singapore in 20-08.9S 115-02.4E
  9. HYDROPAC 1601/20 · Missiles2020-05-28 → 2020-05-31
    Hazardous operations, space debris 301956Z to 302039Z may and alternate 311934Z to 312017Z may in area bound…
  10. HYDROPAC 1514/20 · Missiles2020-05-21 → 2020-05-28
    Hazardous operations, space debris 272107Z to 272150Z may, alternate 301956Z to 302039Z and 311934Z to…
  11. HYDROPAC 1510/20 · Derelicts2020-05-21 → 2020-06-05
    Vessels, adrift and requesting assistance in: a. 02-00N 091-00E
  12. HYDROPAC 1493/20 · Cable ops2020-05-20 → 2020-06-10
    Cable operations 25 may thru 30 jun by cableship teliri along trackline joining 25-15.37S 047-03.48E,…
  13. HYDROPAC 1461/20 · Missiles2020-05-16 → 2020-05-17
    Hazardous operations, space debris 171409Z to 171607Z may alternate 181449Z to 181509Z may in area bound by…
  14. HYDROPAC 1415/20 · Missiles2020-05-12 → 2020-05-16
    Hazardous operations, space debris 161319Z to 161528Z may, alternate 171409Z to 171607Z and 181449Z to…
  15. HYDROPAC 1410/20 · Surveys2020-05-11 → 2020-05-12
    Underwater operations in progress by gliders until further notice area bound by 31-24.5S 114-50.0E, 32-05.0S…
  16. HYDROPAC 1274/20 · Nav aids2020-04-23 → 2020-04-24
    Port hedland C2 light 19-59.6S 118-26.4E unlit
  17. HYDROPAC 1261/20 · Debris2020-04-22 → 2020-04-25
    Nine meter object adrift in vicinity 14-04.26S 123-50.58E at 220620Z apr
  18. HYDROPAC 1254/20 · Debris2020-04-21 → 2020-04-22
    Nine meter object adrift in vicinity 14-05.0S 124-00.14E
  19. HYDROPAC 1253/20 · Derelicts2020-04-21 → 2020-04-24
    Derelict seven meter F/V paille en queue I, white hull, partially submerged and adrift in 21-26.18S 055-25.24E
  20. HYDROPAC 1252/20 · Nav aids2020-04-21 → 2020-04-24
    Momi bay range light, rear 17-54.6S 117-17.5E unlit

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