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 2543/11 · Exercises2011-09-10 → 2011-09-13
    Gunnery exercises 131030Z to 131430Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  2. HYDROPAC 2524/11 · Exercises2011-09-07 → 2011-09-09
    Gunnery exercises 090400Z to 090800Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  3. HYDROPAC 2388/11 · Icebergs2011-08-25 → 2011-08-28
    Iceberg reported vicinity 43-19.66S 052-40.58E at 241400Z aug
  4. HYDROPAC 2374/11 · Exercises2011-08-23 → 2011-08-24
    Gunnery exercises 240300Z to 240800Z aug in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  5. HYDROPAC 2371/11 · Cable ops2011-08-23 → 2011-08-27
    Seismic survey in progress until further notice by M/V greatship mamta in 19-16.5S 116-46.5E
  6. HYDROPAC 2339/11 · Exercises2011-08-20 → 2011-08-23
    Gunnery exercises 230500Z to 231000Z aug in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  7. HYDROPAC 2313/11 · Exercises2011-08-17 → 2011-08-19
    Gunnery exercises 190400Z to 191000Z aug in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  8. HYDROPAC 2296/11 · Missiles2011-08-16 → 2011-08-18
    Hazardous operations 0645Z to 0830Z daily 17 and 18 aug within 333 miles of 49-32S 031-14E
  9. HYDROPAC 2224/11 · Exercises2011-08-08 → 2011-08-11
    Gunnery exercises 110430Z to 110900Z aug in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  10. HYDROPAC 2194/11 · Nav aids2011-08-05 → 2011-08-05
    Nga chart 74510 (2ND ed)
  11. HYDROPAC 2189/11 · Derelicts2011-08-04 → 2011-08-07
    Derelict S/V malo adrift vicinity 04-34.29S 045-26.37E on 01 aug
  12. HYDROPAC 2154/11 · Derelicts2011-08-01 → 2011-08-04
    Derelict ten meter vessel adrift vicinity 35-08S 112-48E at 011844Z aug
  13. HYDROPAC 2076/11 · Derelicts2011-07-21 → 2011-07-24
    Derelict M/V malo adrift vicinity 07-36S 051-06E at 201010Z jul
  14. HYDROPAC 2067/11 · Piracy2011-07-20 → 2011-07-30
    Possible mothership activity in 09-27N 052-48E
  15. HYDROPAC 1964/11 · Debris2011-07-07 → 2011-07-10
    Six mile long line with buoys adrift vicinity 20-08S 054-58E
  16. HYDROPAC 1950/11 · Exercises2011-07-06 → 2011-07-11
    Gunnery exercises 110500Z to 111200Z jul in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  17. HYDROPAC 1830/11 · Debris2011-06-24 → 2011-06-27
    Four mile long line with buoys adrift vicinity 20-55S 055-00E on 22 jun
  18. HYDROPAC 1819/11 · Nav aids2011-06-23 → 2011-06-23
    Nga chart 74510 (2ND ed)
  19. HYDROPAC 1740/11 · Piracy2011-06-15 → 2011-06-25
    M/V attacked vicinity 09-18N 051-15E at 150305Z jun
  20. HYDROPAC 1696/11 · Exercises2011-06-10 → 2011-06-15
    Gunnery exercises 150200Z to 151500Z jun in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…

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