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 910/03 · Containers2003-05-28 → 2003-06-04
    Ten containers adrift vicinity 31-22.2S 114-56.1E at 260912Z may
  2. HYDROPAC 897/03 · Containers2003-05-26 → 2003-05-28
    Three containers adrift vicinity 31-22.2S 114-56.1E at 260912Z may
  3. HYDROPAC 873/03 · Exercises2003-05-22 → 2003-05-23
    Hazardous operations 230900Z to 231100Z may in area bound by 20-55.0S 055-12.0E, 20-58.6S 055-10.0E,…
  4. HYDROPAC 869/03 · Exercises2003-05-21 → 2003-05-23
    Hazardous operations 231000Z to 231100Z may in area bound by 20-55.0S 055-12.0E, 20-58.6S 055-10.0E,…
  5. HYDROPAC 852/03 · Cable ops2003-05-17 → 2003-05-31
    Seismic survey in progress until further notice by M/V polar duke towing three mile long cable in 21-13S…
  6. HYDROPAC 745/03 · Cable ops2003-04-28 → 2003-05-01
    Seismic survey in progress until further notice by M/V geco emerald towing eight three mile long cables…
  7. HYDROPAC 625/03 · Other2003-04-09 → 2003-04-15
    15 meter F/V karya marina 822 and 15 meter F/V karya marina 818, white and green hulls, unreported
  8. HYDROPAC 513/03 · Surveys2003-03-22 → 2003-04-05
    Underwater operations in progress until further notice by M/V rockwater 2 in 20-54.1S 114-54.1E
  9. HYDROPAC 483/03 · Derelicts2003-03-19 → 2003-03-25
    Derelict seven meter barge adrift vicinity 28-08S 035-10E
  10. HYDROPAC 434/03 · Cable ops2003-03-11 → 2003-04-06
    Cable laying operations 15 mar thru 05 apr by cableship rene descartes along tracklines joining: a. 46-09S…
  11. HYDROPAC 420/03 · Surveys2003-03-09 → 2003-03-16
    Underwater operations in progress until further notice by M/V rockwater 2 vicinity 20-54.6S 114-54.5E
  12. HYDROPAC 366/03 · Nav aids2003-02-28 → 2003-03-10
    Cape leveque light 16-23.8S 122-55.7E unlit
  13. HYDROPAC 323/03 · Piracy2003-02-22 → 2003-02-22
    Vessel under attack by pirates in 09-56N 051-43E at 221338Z feb
  14. HYDROPAC 249/03 · Nav aids2003-02-11 → 2003-02-12
    RACON at imperieuse reef light 17-31.1S 118-56.8E inoperative
  15. HYDROPAC 216/03 · Derelicts2003-02-06 → 2003-02-10
    Derelict 25 meter F/V adrift vicinity 07-12.2S 091-50.9E at 060730Z feb
  16. HYDROPAC 189/03 · Nav aids2003-02-02 → 2003-02-11
    RACON at imperieuse reef light 17-31.1S 118-56.8E inoperative
  17. HYDROPAC 187/03 · Nav aids2003-02-02 → 2003-02-11
    Imperieuse reef light 17-31.1S 118-56.8E unlit
  18. HYDROPAC 173/03 · Other2003-01-30 → 2003-02-06
    Underwater ordnance detonations 31 jan thru 05 feb within five miles of 07-15S 072-35E
  19. HYDROPAC 126/03 · Nav aids2003-01-24 → 2003-02-14
    Ile tromelin light 15-53S 054-31E unlit
  20. HYDROPAC 84/03 · Nav aids2003-01-17 → 2003-02-28
    Cap d'ambre light 11-57S 049-17E 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.