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 1973/14 · Nav aids2014-07-05 → 2014-07-05
    Australia-northwest Coast
  2. HYDROPAC 1888/14 · Missiles2014-06-28 → 2014-06-29
    Hazardous operations 0345Z to 0615Z daily 30 jun thru 02 jul in area bound by 28-35S 076-50E, 29-05S…
  3. HYDROPAC 1843/14 · Missiles2014-06-25 → 2014-07-01
    Hazardous operations 0345Z to 0615Z daily 30 jun thru 02 jul: a. within ten miles of 13-43.9N 080-14.2E
  4. HYDROPAC 1812/14 · Nav aids2014-06-23 → 2014-06-23
    Australia-northwest Coast
  5. HYDROPAC 1801/14 · Missiles2014-06-22 → 2014-06-23
    Hazardous operations 222232Z to 230146Z jun in area bound by 40-06S 106-05E, 40-05S 106-31E, 40-43S 108-54E,…
  6. HYDROPAC 1761/14 · Missiles2014-06-18 → 2014-06-23
    Hazardous operations 202310Z to 210012Z jun, alternate 212248Z to 212350Z and 222226Z to 222328Z jun in area…
  7. HYDROPAC 1745/14 · Missiles2014-06-17 → 2014-06-20
    Hazardous operations 1800Z to 2200Z daily 19 and 20 jun within: a. 105.3 miles of 46-37S 033-08E
  8. HYDROPAC 1739/14 · Missiles2014-06-16 → 2014-06-18
    Hazardous operations 202310Z to 210012Z jun, alternate 212248Z to 212350Z jun in area bound by 40-06S…
  9. HYDROPAC 1715/14 · Nav aids2014-06-14 → 2014-07-08
    Two mile berth requested
  10. HYDROPAC 1677/14 · Missiles2014-06-11 → 2014-06-13
    Hazardous operations 160102Z to 160204Z jun, alternate 170040Z to 170142Z jun in area bound by 40-06S…
  11. HYDROPAC 1670/14 · Other2014-06-11 → 2014-06-21
    Scuba diver missing vicinity 20-21.64S 055-31.09E at 091530Z jun
  12. HYDROPAC 1639/14 · Missiles2014-06-08 → 2014-06-10
    Hazardous operations 130209Z to 130311Z jun, alternate 140147Z to 140249Z jun in area bound by 40-06S…
  13. HYDROPAC 1621/14 · Nav aids2014-06-06 → 2014-06-06
    Australia-northwest Coast
  14. HYDROPAC 1561/14 · Other2014-06-01 → 2015-03-12
    Indonesia
  15. HYDROPAC 1485/14 · Derelicts2014-05-24 → 2014-05-25
    Derelict F/V jin chun tsa adrift in 35-59.3S 032-57.1E
  16. HYDROPAC 1396/14 · Nav aids2014-05-14 → 2014-05-15
    Australia-west coast chart 74560 point moore light 28-47.1S 114-34.7E unlit
  17. HYDROPAC 1349/14 · Nav aids2014-05-10 → 2014-06-28
    Two mile berth requested
  18. HYDROPAC 1299/14 · Missiles2014-05-05 → 2014-05-11
    Hazardous operations 101449Z to 101551Z may, alternate 111427Z to 111529Z may in area bound by 40-06S…
  19. HYDROPAC 1242/14 · Derelicts2014-04-30 → 2014-05-03
    Derelict ten meter vessel partially submerged and adrift in 12-47S 124-40E at 301447Z apr
  20. HYDROPAC 1212/14 · Nav aids2014-04-28 → 2014-04-29
    Australia-west Coast

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