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 1087/12 · Piracy2012-04-16 → 2012-04-28
    Mothership activity in 09-49S 040-31E at 160800Z apr
  2. HYDROPAC 1070/12 · Derelicts2012-04-14 → 2012-04-17
    Derelict 12 meter vessel partially submerged and adrift in 10-22.5S 105-39.7E at 140810Z apr
  3. HYDROPAC 1068/12 · Other2012-04-14 → 2012-04-17
    M/V orient lotus reports crewman requiring medical assistance in 33-05S 093-58E at 140827Z apr
  4. HYDROPAC 1064/12 · Other2012-04-13 → 2012-05-03
    Geophysical operations in progress until 02 may by M/V rylan t in area bound by 08-58.37S 039-57.63E,…
  5. HYDROPAC 1058/12 · Exercises2012-04-13 → 2012-04-18
    Hazardous operations
  6. HYDROPAC 1037/12 · Other2012-04-11 → 2012-04-12
    Tsunami warning
  7. HYDROPAC 1036/12 · Derelicts2012-04-11 → 2012-04-14
    Derelict 23 meter vessel adrift in 10-20.6S 105-50.2E at 110730Z apr
  8. HYDROPAC 1024/12 · Other2012-04-10 → 2012-04-13
    Geophysical operations 12 apr thru 02 may by M/V rylan t in area bound by 09-33.42S 039-56.98E, 08-58.22S…
  9. HYDROPAC 957/12 · Derelicts2012-04-05 → 2012-04-08
    Derelict 18 meter long F/V, red and white hull, partially submerged and adrift vicinity 11-24.6S 115-45.7E…
  10. HYDROPAC 917/12 · Piracy2012-03-30 → 2012-04-14
    M/V eglantine pirated vicinity 07-37N 056-12E at 300732Z mar
  11. HYDROPAC 886/12 · Piracy2012-03-28 → 2012-04-07
    Possible pirate activity vicinity 08-30N 053-00E at 280917Z mar
  12. HYDROPAC 885/12 · Piracy2012-03-28 → 2012-04-07
    F/V naham 3 hijacked in 06-18.50N 050-13.04E at 280730Z mar
  13. HYDROPAC 863/12 · Piracy2012-03-26 → 2012-03-31
    M/V attacked in 05-21S 049-18E at 260306Z mar
  14. HYDROPAC 813/12 · Derelicts2012-03-21 → 2012-03-24
    Derelict 91 meter barge adrift vicinity 14-56S 121-11E at 210031Z mar
  15. HYDROPAC 802/12 · Derelicts2012-03-19 → 2012-03-21
    Derelict 91 meter barge adrift vicinity 15-01S 120-39E at 191230Z mar
  16. HYDROPAC 801/12 · Derelicts2012-03-19 → 2012-03-22
    Derelict F/V partially submerged and adrift vicinity 08-59S 039-46E at 191508Z mar
  17. HYDROPAC 795/12 · Piracy2012-03-19 → 2012-03-24
    M/V attacked in 05-39N 053-20E at 190255Z mar
  18. HYDROPAC 790/12 · Derelicts2012-03-18 → 2012-03-19
    Derelict 91 meter barge adrift vicinity 15-02S 119-57E at 181231Z mar
  19. HYDROPAC 785/12 · Piracy2012-03-17 → 2012-03-24
    M/V attacked in 05-47N 053-50E at 171120Z mar
  20. HYDROPAC 781/12 · Derelicts2012-03-17 → 2012-03-18
    Derelict 91 meter barge adrift vicinity 14-45.1S 119-14.5E at 170631Z mar

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