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 1961/08 · Other2008-10-07 → 2008-10-11
    3 meter S/V spyglass dismasted and requesting fuel in 26-54S 098-37E at 070600Z oct
  2. HYDROPAC 1908/08 · Exercises2008-09-29 → 2008-10-02
    Hazardous operations 0630Z to 1030Z daily 30 sep thru 02 oct within 252 miles of 43-40S 032-33E
  3. HYDROPAC 1872/08 · Exercises2008-09-24 → 2008-09-26
    Gunnery exercises 252000Z to 252359Z and 260001Z to 260900Z sep in area bound by 21-12.0S 054-57.0E,…
  4. HYDROPAC 1851/08 · Nav aids2008-09-21 → 2008-09-22
    Nga chart 74560 (10TH ed)
  5. HYDROPAC 1847/08 · Other2008-09-21 → 2008-09-22
    Bombing exercises 221130Z to 221530Z sep within 20 miles of 02-32S 041-26E
  6. HYDROPAC 1846/08 · Other2008-09-20 → 2008-09-21
    Bombing exercises 211200Z to 211600Z sep within 20 miles of 02-32S 041-26E
  7. HYDROPAC 1837/08 · Other2008-09-20 → 2008-09-21
    Bombing exercises 211200Z to 211600Z sep within 20 miles of 02-32S 041-26E
  8. HYDROPAC 1835/08 · Other2008-09-20 → 2008-09-20
    Bombing exercises 201200Z to 201500Z sep within 20 miles of 02-32S 041-26E
  9. HYDROPAC 1759/08 · Other2008-09-10 → 2008-09-10
    Exmouth dpgs station 21-53.1S 114-08.0E inoperative
  10. HYDROPAC 1729/08 · Derelicts2008-09-05 → 2008-09-12
    Derelict M/V isla gorite adrift vicinity 27-58S 046-52E
  11. HYDROPAC 1711/08 · Exercises2008-09-03 → 2008-09-09
    Gunnery exercises 080800Z to 081300Z and 090400Z to 090800Z sep in area bound by 21-12.0S 054-57.0E,…
  12. HYDROPAC 1697/08 · Nav aids2008-08-31 → 2008-09-06
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  13. HYDROPAC 1672/08 · Exercises2008-08-28 → 2008-09-01
    Hazardous operations 0700Z to 0830Z daily 29 aug thru 01 sep within 250 miles of 39-32S 042-42E
  14. HYDROPAC 1670/08 · Nav aids2008-08-28 → 2008-08-28
    Nga chart 74020 (4TH ed)
  15. HYDROPAC 1649/08 · Exercises2008-08-25 → 2008-08-28
    Hazardous operations 0700Z to 0830Z daily 29 aug thru 01 sep in area bound by 37-15S 042-30E, 37-35S…
  16. HYDROPAC 1609/08 · Nav aids2008-08-22 → 2008-08-26
    Nga chart 74593 (1ST ed)
  17. HYDROPAC 1595/08 · Nav aids2008-08-20 → 2008-08-23
    Nga chart 74493 (3RD ed)
  18. HYDROPAC 1495/08 · Exercises2008-08-05 → 2008-08-07
    Hazardous operations 0530Z to 0730Z daily 06 and 07 aug within 250 miles of 43-38S 032-32E
  19. HYDROPAC 1473/08 · Volcanic2008-07-31 → 2009-08-29
    Nga chart 702 (5TH ed)
  20. HYDROPAC 1454/08 · Containers2008-07-30 → 2008-08-06
    Three 40 foot containers adrift in 33-46S 114-36E at 300530Z jul

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