Indian Ocean

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

in force
23
last 12 months
27
since 1997
3,523
categories
15

In force now · 23

  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. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  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%
Missiles54415%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 174/16 · Nav aids2016-01-20 → 2016-02-14
    Eight buoys, yellow, fl w 3 sec, established vicinity 19-32.4S 116-10.8E
  2. HYDROPAC 173/16 · Nav aids2016-01-20 → 2016-03-06
    12 buoys, yellow, fl w 3 sec, established vicinity 19-48.76S 115-17.82E
  3. HYDROPAC 156/16 · Derelicts2016-01-18 → 2016-01-21
    Derelict vessel young epilepsy, white hull, partially submerged and adrift vicinity 15-49.8S 066-15.3E on 16…
  4. HYDROPAC 146/16 · Derelicts2016-01-17 → 2016-01-20
    Derelict 20 meter vessel, blue hull, adrift in 23-32.07S 051-47.25E on 17 jan
  5. HYDROPAC 127/16 · Derelicts2016-01-15 → 2016-01-18
    Derelict F/V nipuni adrift vicinity 02-42N 077-54E on 14 jan
  6. HYDROPAC 105/16 · Derelicts2016-01-14 → 2016-01-17
    Derelict 20 meter vessel, blue hull, adrift vicinity 23-42.3S 051-39.0E
  7. HYDROPAC 79/16 · Nav aids2016-01-10 → 2016-01-16
    Australia-northeast coast DNC 04
  8. HYDROPAC 26/16 · Surveys2016-01-05 → 2017-01-28
    Scientific mooring, at depth 20 meters, established in 19-55.49S 115-23.81E
  9. HYDROPAC 11/16 · Cable ops2016-01-03 → 2016-01-04
    Cable laying operations in progress until further notice by M/V miclyn endurance along trackline between…
  10. HYDROPAC 4224/15 · Nav aids2015-12-28 → 2016-01-24
    12 buoys, yellow, fl w 3 sec, established in 19-54.3S 115-16.1E
  11. HYDROPAC 4211/15 · Missiles2015-12-27 → 2015-12-29
    Hazardous operations 2300Z to 0500Z commencing daily: a. 27 dec within 80 miles of 07-39.7S 107-41.6E…
  12. HYDROPAC 4195/15 · Cable ops2015-12-25 → 2016-02-12
    Seismic survey 28 dec thru 11 feb 16 by M/V nordic bahari in area bound by 02-49.2S 101-10.9E, 03-20.2S…
  13. HYDROPAC 4194/15 · Missiles2015-12-25 → 2015-12-27
    Hazardous operations 2200Z to 0400Z commencing daily: a. 27 dec within 80 miles of 07-39.7S 107-41.6E…
  14. HYDROPAC 4154/15 · Missiles2015-12-21 → 2015-12-22
    Hazardous operations 220223Z to 220244Z dec in area bound by 12-15S 069-49E, 31-49S 094-43E, 49-12S 134-54E,…
  15. HYDROPAC 4139/15 · Missiles2015-12-19 → 2015-12-22
    Hazardous operations 210223Z to 210240Z dec, alternate 220227Z to 220244Z dec in area bound by 12-15S…
  16. HYDROPAC 4129/15 · Missiles2015-12-18 → 2015-12-21
    Rockets
  17. HYDROPAC 4128/15 · Missiles2015-12-18 → 2015-12-18
    Rockets
  18. HYDROPAC 4088/15 · Missiles2015-12-15 → 2015-12-21
    Rockets
  19. HYDROPAC 4060/15 · Containers2015-12-13 → 2015-12-16
    20 containers adrift along trackline between 12-43S 121-39E and 13-05S 121-31E at 130130Z dec
  20. HYDROPAC 4049/15 · Exercises2015-12-12 → 2015-12-14
    Gunnery exercises 141600Z to 141900Z dec in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…

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