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 1547/07 · Exercises2007-09-08 → 2007-09-11
    Gunnery exercises 070400Z to 070830Z, 071100Z to 071500Z, 101000Z to 101200Z, and 110600Z to 110800Z sep in…
  2. HYDROPAC 1524/07 · Exercises2007-08-31 → 2007-08-31
    Gunnery exercises 310500Z to 310700Z aug in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  3. HYDROPAC 1476/07 · Exercises2007-08-25 → 2007-08-29
    Hazardous operations 270900Z to 271100Z and 290900Z to 291130Z aug in area bound by 21-12.0S 054-57.0E,…
  4. HYDROLANT 1472/07 · Derelicts2007-08-24 → 2007-08-25
    Derelict F/V mar del chubut adrift vicinity 41-21S 057-44E
  5. HYDROPAC 1395/07 · Cable ops2007-08-09 → 2007-09-16
    Seismic survey 100001Z aug to 160001Z sep by M/V akademik fersman towing 8500 meter long cable in in area…
  6. HYDROPAC 1390/07 · Surveys2007-08-09 → 2007-08-23
    Underwater operations in progress until further notice by M/V markab vicinity 20-00S 115-22E
  7. HYDROPAC 1373/07 · Derelicts2007-08-07 → 2007-08-14
    Derelict vessel, green, white and gray hull, partially submerged and adrift in 29-13.81S 059-35.83E
  8. HYDROPAC 1324/07 · Derelicts2007-07-31 → 2007-10-21
    S/V clandara dismasted, adrift and requires water and fuel in 30-01S 059-28E
  9. HYDROPAC 1280/07 · Nav aids2007-07-24 → 2008-02-10
    Nga chart 74020 (4TH ed)
  10. HYDROPAC 1247/07 · Cable ops2007-07-17 → 2007-07-23
    Seismic survey in progress until further notice by M/V western trident towing four mile long cable along…
  11. HYDROPAC 1238/07 · Derelicts2007-07-16 → 2007-07-23
    7 adrift vicinity 33-41.800S 033-19.855E at 152100Z jul
  12. HYDROPAC 1212/07 · Nav aids2007-07-12 → 2007-07-13
    Nga chart 74015 (1ST ed)
  13. HYDROPAC 1161/07 · Surveys2007-07-04 → 2007-09-30
    Underwater operations in progress until further notice by M/V pacific warlock and M/V pacific worker…
  14. HYDROPAC 1155/07 · Wrecks2007-07-04 → 2008-02-10
    Nga chart 74560 (10TH ed)
  15. HYDROPAC 1140/07 · Derelicts2007-06-30 → 2007-07-07
    Derelict 6.4 meter M/V adrift vicinity 20-18S 116-42E at 250600Z jun
  16. HYDROPAC 1089/07 · Surveys2007-06-23 → 2007-07-04
    Underwater operations in progress until further notice vicinity 12-17S 124-20E
  17. HYDROPAC 1088/07 · Cable ops2007-06-22 → 2007-07-04
    Seismic survey in progress until further notice by M/V srv viking towing 3.5 mile long cable vicinity of…
  18. HYDROPAC 1053/07 · Derelicts2007-06-14 → 2007-06-16
    M/V main ore on fire, adrift and without communications in 04-40.92N 092-43.13E at 140602Z jun
  19. HYDROPAC 1050/07 · Exercises2007-06-14 → 2007-06-18
    Hazardous operations 0200Z to 0330Z daily 15 thru 18 jun within 216 miles of 30-56S 046-07E
  20. HYDROPAC 1035/07 · Derelicts2007-06-12 → 2007-06-14
    M/V main ore adrift in 04-48N 092-06E at 121613Z jun

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