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 743/04 · Other2004-04-26 → 2004-04-28
    M/V corona fortuna reports crewman with severe hand injury in 05-25N 051-32E at 262030Z apr
  2. HYDROPAC 674/04 · Exercises2004-04-15 → 2004-04-16
    Hazardous operations 160100Z to 161000Z apr in area bound by 12-10S 111-40E, 10-40S 111-00E, 10-40S 114-30E,…
  3. HYDROPAC 609/04 · Derelicts2004-04-04 → 2004-04-11
    Derelict ten meter vessel adrift vicinity 03-31.2S 050-25.2E on 04 apr
  4. HYDROPAC 593/04 · Exercises2004-04-01 → 2004-07-01
    Hazardous operations in progress until 302359Z jun: a. in area between 09-00S 13-00S and 070-00E 073-00E
  5. HYDROPAC 568/04 · Nav aids2004-03-28 → 2004-04-01
    Port hedland buoy 2E 20-03.2S 118-32.7E unlit
  6. HYDROPAC 543/04 · Nav aids2004-03-25 → 2004-03-27
    Foul bay light 34-15.0S 115-02.2E unlit
  7. HYDROPAC 520/04 · Nav aids2004-03-21 → 2004-04-07
    Cervantes island rear range light 30-28.6S 115-04.4E temporarily removed
  8. HYDROPAC 426/04 · Cable ops2004-03-07 → 2004-05-08
    Pipeline operations in progress until further notice along trackline between 20-33.3S 115-42.4E and 20-32.3S…
  9. HYDROPAC 350/04 · Nav aids2004-02-25 → 2003-02-26
    GPS unreliable 260001Z to 260900Z feb within 48 miles of 32-12S 115-42E
  10. HYDROPAC 276/04 · Derelicts2004-02-14 → 2004-02-21
    Derelict 13 meter S/V beam 7 adrift vicinity 40-15S 080-25E at 131800Z feb
  11. HYDROPAC 248/04 · Nav aids2004-02-09 → 2004-02-12
    Gantheaume point light 17-58.5S 122-10.6E unlit
  12. HYDROPAC 220/04 · Debris2004-02-04 → 2004-02-07
    Yellow buoy adrift in 22-11.46S 113-19.32E at 040148Z feb
  13. HYDROPAC 209/04 · Cable ops2004-02-01 → 2004-02-05
    Seismic survey in progress until further notice by M/V veritas viking II towing three mile long cables along…
  14. HYDROPAC 203/04 · Cable ops2004-01-31 → 2004-02-01
    Seismic survey in progress until further notice by M/V veritas viking II towing three mile long cable along…
  15. HYDROPAC 133/04 · Exercises2004-01-23 → 2004-01-26
    Hazardous operations 261000Z to 261500Z jan in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E,…
  16. HYDROPAC 118/04 · Other2004-01-22 → 2004-01-23
    M/V msc bremen reports crewman requiring medical assistance in vicinity 31-37S 100-00E at 220100Z jan
  17. HYDROPAC 2264/03 · Exercises2003-12-30 → 2004-02-01
    Hazardous operations: a. 010001Z to 312359Z jan in area between 09-00S 13-00S and 070-00E 073-00E
  18. HYDROPAC 2148/03 · Other2003-12-09 → 2003-12-16
    Eight meter long float and equipment adrift in 28-13.3S 113-47.5E at 091014Z dec
  19. HYDROPAC 2079/03 · Derelicts2003-11-30 → 2003-12-20
    M/V turicum disabled and adrift vicinity 37-49S 072-21E
  20. HYDROPAC 2076/03 · Other2003-11-29 → 2003-11-29
    Underwater coring operations in progress until further notice by M/V markab along trackline between 39-45.3S…

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