Indian Ocean

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

in force
21
last 12 months
56
since 1997
3,589
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
25
26

By month (all years)

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

By category · since 1997

Derelicts62217%
Missiles56016%
Nav aids46713%
Surveys41211%
Other37610%
Exercises35710%
Piracy34110%
Cable ops1955%
Debris1093%
Icebergs822%
Wrecks371%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,568 cancelled

  1. HYDROPAC 1712/06 · Nav aids2006-09-02 → 2008-02-10
    RACON at port hedland beacon C1 19-59.6S 118-26.1E inoperative
  2. HYDROPAC 1676/06 · Nav aids2006-08-29 → 2008-02-10
    Perth dgps station 31-47S 115-56E inoperative
  3. HYDROPAC 1670/06 · Towing2006-08-28 → 2006-08-28
    Perth dgps station 31-47.9S 115-56.0E inoperative
  4. HYDROPAC 1667/06 · Derelicts2006-08-27 → 2006-09-03
    Derelict vessel adrift vicinity 08-24S 105-25E at 270450Z aug
  5. HYDROPAC 1656/06 · Exercises2006-08-26 → 2006-08-31
    Gunnery exercises 291000Z to 291300Z and 310830Z to 311200Z aug in area bound by 21-12.0S 054-57.0E,…
  6. HYDROPAC 1599/06 · Derelicts2006-08-21 → 2006-08-28
    Derelict M/V amar adrift vicinity 05-45.0N 089-02.0E 2. cancel HYDROPAC 1552/06 and 1562/06
  7. HYDROPAC 1567/06 · Nav aids2006-08-17 → 2008-02-10
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  8. HYDROPAC 1542/06 · Nav aids2006-08-14 → 2006-08-23
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  9. HYDROPAC 1418/06 · Nav aids2006-07-28 → 2006-08-23
    Karratha dgps station 20-42.4S 116-46.4E inoperative
  10. HYDROPAC 1395/06 · Nav aids2006-07-25 → 2006-07-26
    Rottnest island light 32-00.5S 115-30.1E unreliable
  11. HYDROPAC 1385/06 · Cable ops2006-07-24 → 2006-08-04
    Seismic survey in progress until 03 aug by M/V marion dufresne along trackline between 03-50N 092-49E and…
  12. HYDROPAC 1352/06 · Derelicts2006-07-18 → 2006-08-30
    F/V le havre, engine failure and adrift in 27-01S 045-14E
  13. HYDROPAC 1296/06 · Surveys2006-07-10 → 2006-07-16
    Survey operations in progress until further notice by M/V mermaid investigator vicinity 12-17.5S 124-19.5E
  14. HYDROPAC 1257/06 · Nav aids2006-07-03 → 2006-07-03
    Perth dgps station 31-47.9S 115-56.0E inoperative
  15. HYDROPAC 1113/06 · Nav aids2006-06-17 → 2007-03-22
    RACON at cape leveque light 16-23.8S 122-55.7E discontinued
  16. HYDROPAC 1084/06 · Nav aids2006-06-13 → 2007-03-22
    Gantheaume point light 17-59.0S 122-11.0E changed to: fl w 10S 18 miles
  17. HYDROPAC 1051/06 · Exercises2006-06-09 → 2006-06-12
    Gunnery exercises 121000Z to 121200Z jun in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  18. HYDROPAC 1017/06 · Nav aids2006-06-02 → 2008-06-14
    Racons discontinued at: 1. red bluff light 17-03.5S 122-19.0E
  19. HYDROPAC 927/06 · Derelicts2006-05-20 → 2006-05-27
    Partially submerged F/V adrift vicinity 16-17.2S 120-48.6E at 201200Z may
  20. HYDROPAC 896/06 · Nav aids2006-05-15 → 2008-02-10
    Mary anne reef light 21-15.2S 115-27.2E destroyed

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