Indian Ocean

IHO sea area 45 · 20° to 147° E, -60° to 10° N

in force
21
last 12 months
28
since 1997
3,524
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
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Derelicts62118%
Missiles54515%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,503 cancelled

  1. HYDROPAC 1795/13 · Derelicts2013-06-20 → 2013-06-23
    15 meter F/V partially submerged and adrift in 10-23.5S 105-32.3E at 200610Z jun
  2. HYDROPAC 1791/13 · Nav aids2013-06-20 → 2014-11-18
    Australia-northwest Coast
  3. HYDROPAC 1771/13 · Other2013-06-18 → 2013-06-18
    Vessel requesting assistance in 09-11.87S 106-20.82E at 180905Z
  4. HYDROPAC 1747/13 · Derelicts2013-06-17 → 2013-06-18
    Derelict vessel adrift in 10-16.9S 105-27.5E at 151022Z jun
  5. HYDROPAC 1740/13 · Derelicts2013-06-16 → 2013-06-19
    Derelict vessel adrift in 10-23.3S 105-36.2E at 160941Z jun
  6. HYDROPAC 1730/13 · Derelicts2013-06-15 → 2013-06-16
    Derelict vessel adrift in 10-16.9S 105-27.5E at 151022Z jun
  7. HYDROPAC 1681/13 · Exercises2013-06-11 → 2013-06-14
    Gunnery exercises 140700Z to 141000Z jun in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  8. HYDROPAC 1661/13 · Other2013-06-09 → 2013-06-12
    24 meter F/V, yellow and blue hull with red stripe, unreported
  9. HYDROPAC 1655/13 · Derelicts2013-06-09 → 2013-06-12
    Derelict 28 meter vessel adrift vicinity 02-36.62S 073-20.49E at 071135Z jun
  10. HYDROPAC 1644/13 · Derelicts2013-06-07 → 2013-06-10
    Derelict 14 meter F/V, red and white hull, adrift vicinity 07-05.6S 092-11.40E at 060948Z jun
  11. HYDROPAC 1599/13 · Derelicts2013-06-03 → 2013-06-04
    Two derelict f/v's partially submerged and adrift vicinity 10-09.3S 105-39.3E at 031230Z jun 13
  12. HYDROPAC 1580/13 · Cable ops2013-06-01 → 2013-06-14
    Seismic survey in progress until further notice by M/V polarcus alima towing 12 five mile long cables…
  13. HYDROPAC 1566/13 · Missiles2013-05-30 → 2013-05-31
    Hazardous operations 0500Z to 1500Z daily 02 thru 04 and 16 thru 18 jun in area bound by 21-35S 055-30E,…
  14. HYDROPAC 1558/13 · Missiles2013-05-30 → 2013-06-18
    Hazardous operations 0500Z to 1500Z daily 02 thru 04 and 16 thru 18 jun in area bound by 21-35S 055-30E,…
  15. HYDROPAC 1534/13 · Nav aids2013-05-29 → 2013-05-29
    Australia-northwest Coast
  16. HYDROPAC 1529/13 · Icebergs2013-05-28 → 2013-05-31
    Iceberg sighted in 48-51.9S 035-10.1E
  17. HYDROPAC 1486/13 · Other2013-05-23 → 2013-05-24
    Ten meter long structure partially submerged and adrift in 29-58.8S 039-02.6E at 231136Z may
  18. HYDROPAC 1485/13 · Derelicts2013-05-23 → 2013-05-26
    Two derelict seven meter vessels partially submerged and adrift in 10-08.8S 105-32.9E at 231118Z may
  19. HYDROPAC 1428/13 · Derelicts2013-05-17 → 2013-05-20
    Derelict vessel partially submerged and adrift in 10-33S 105-47E at 170712Z may
  20. HYDROPAC 1426/13 · Derelicts2013-05-17 → 2013-05-20
    Derelict 20 meter vessel adrift vicinity 10-14S 105-39E at 170620Z may

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