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 3782/13 · Derelicts2013-12-03 → 2013-12-06
    Derelict 12 meter long vessel adrift vicinity 10-28S 105-24E at 030910Z dec
  2. HYDROPAC 3777/13 · Exercises2013-12-03 → 2013-12-06
    Gunnery exercises 020200Z to 061600Z dec in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  3. HYDROPAC 3651/13 · Exercises2013-11-25 → 2013-11-29
    Gunnery exercises 270200Z to 291600Z nov in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  4. HYDROPAC 3645/13 · Cable ops2013-11-24 → 2013-12-09
    Cable laying operations 25 nov thru 18 dec by cableship ile de sein along trackline joining 02-00.23N…
  5. HYDROPAC 3601/13 · Missiles2013-11-20 → 2013-11-22
    Hazardous operations 0630Z to 0830Z daily 21 and 22 nov within: a. 108 miles of 48-20S 035-08E
  6. HYDROPAC 3508/13 · Derelicts2013-11-12 → 2013-11-15
    Derelict 15 meter F/V, red hull, adrift vicinity 04-16S 067-04E
  7. HYDROPAC 3490/13 · Piracy2013-11-09 → 2013-11-11
    M/V attacked in 07-20S 048-37E at 091405Z nov
  8. HYDROPAC 3472/13 · Nav aids2013-11-08 → 2013-11-10
    Australia-northwest Coast
  9. HYDROPAC 3456/13 · Derelicts2013-11-06 → 2013-11-07
    Vessel, disabled and adrift in 08-07.9S 106-40.1E at 061624Z nov
  10. HYDROPAC 3444/13 · Piracy2013-11-06 → 2013-11-16
    M/V attacked in 05-31S 047-07E at 060340Z nov
  11. HYDROPAC 3345/13 · Nav aids2013-10-28 → 2013-10-28
    Australia-northwest Coast
  12. HYDROPAC 3335/13 · Debris2013-10-27 → 2013-10-30
    Seven meter long white cylindrical object adrift vicinity 07-25.76S 083-14.00E at 260542Z oct
  13. HYDROPAC 3332/13 · Nav aids2013-10-27 → 2014-02-19
    Australia-northwest Coast
  14. HYDROPAC 3302/13 · Nav aids2013-10-24 → 2013-10-24
    Australia-northwest Coast
  15. HYDROPAC 3236/13 · Exercises2013-10-20 → 2013-10-23
    Gunnery exercises 210600Z to 211200Z and 230200Z to 231200Z oct in area bound by 21-12.0S 054-57.0E,…
  16. HYDROPAC 3221/13 · Nav aids2013-10-19 → 2013-10-19
    Australia-northwest Coast
  17. HYDROPAC 3203/13 · Nav aids2013-10-18 → 2013-10-18
    Australia-northwest Coast
  18. HYDROPAC 3202/13 · Nav aids2013-10-18 → 2013-10-18
    Australia-west Coast
  19. HYDROPAC 3190/13 · Nav aids2013-10-17 → 2013-10-17
    Australia-west Coast
  20. HYDROPAC 3189/13 · Nav aids2013-10-17 → 2013-10-17
    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.