Indian Ocean

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

in force
22
last 12 months
26
since 1997
3,522
categories
15

In force now · 22

  1. 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.
  2. 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.
  3. NAVAREA X 94/26 · Missiles2026-08-15
    Space debris danger area is in effect from Cape Darnely to Tasmania, daily 1525-2235 UTC, 20-26 August 2026.
  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. NAVAREA X 91/26 · Missiles2026-08-05
    Space debris danger area from Cape Darnley to Tasmania, 80 nautical miles either side of centreline, daily between 1455 and 2205 UTC, 10 to 16 August 2026.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  18. 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.
  19. 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.
  20. 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.
  21. 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.
  22. 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%
Missiles54315%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 4016/18 · Piracy2018-11-06 → 2018-11-13
    F/V attacked in 03-00S 048-28E at 062000Z nov
  2. HYDROPAC 4009/18 · Cable ops2018-11-06 → 2018-11-12
    Cable operations in progress until 11 nov by cableship leon thevenin along trackline joining 11-53S 045-24E,…
  3. HYDROPAC 3998/18 · Surveys2018-11-05 → 2018-12-04
    Survey operations 06 nov thru 03 dec by M/V hakuhomaru along trackline between 16-30N 088-00E, 15-00N…
  4. HYDROPAC 3971/18 · Nav aids2018-11-02 → 2018-11-03
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  5. HYDROPAC 3961/18 · Missiles2018-11-02 → 2018-11-09
    Hazardous operations, rocket launching 0302Z to 0419Z daily 07 nov thru 07 dec in area bound by 28-05S…
  6. HYDROPAC 3957/18 · Exercises2018-11-01 → 2018-11-05
    Hazardous operations 050500Z to 051600Z nov in area within 20 miles of 07-13N 056-28E
  7. HYDROPAC 3927/18 · Nav aids2018-10-30 → 2018-10-30
    Karratha dgps station 20-42.4S 116-47.0E unreliable
  8. HYDROPAC 3926/18 · Exercises2018-10-29 → 2018-11-05
    Hazardous operations 050500Z to 051200Z nov in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  9. HYDROPAC 3914/18 · Nav aids2018-10-28 → 2018-10-29
    Karratha dgps station 20-42.4S 116-47.0E unreliable
  10. HYDROPAC 3782/18 · Derelicts2018-10-17 → 2018-10-19
    Derelict S/V jayalath 4 adrift in 01-55N 082-45E at 161030Z oct
  11. HYDROPAC 3774/18 · Derelicts2018-10-16 → 2018-10-19
    Derelict vessel,yellow green white hull, adrift in 01-24N 088-26E at 100600Z oct
  12. HYDROPAC 3773/18 · Piracy2018-10-16 → 2018-10-23
    M/V attacked in 00-49N 050-53E at 161234Z oct
  13. HYDROPAC 3771/18 · Derelicts2018-10-16 → 2018-10-19
    Derelict F/V chaminda putha 6 adrift in 03-44N 082-00E at 160140Z oct
  14. HYDROPAC 3769/18 · Surveys2018-10-16 → 2018-10-19
    Underwater operations in progress until further notice by M/V ile de brehat along trackline between 38-30S…
  15. HYDROPAC 3768/18 · Derelicts2018-10-16 → 2018-10-19
    Derelict F/V, green hull, adrift in vicinity 02-30N 088-45E on 16 oct
  16. HYDROPAC 3748/18 · Derelicts2018-10-15 → 2018-10-18
    Derelict 11 meter vessel mary luck adrift in 38-15.38S 082-17.63E at 142224Z oct
  17. HYDROPAC 3712/18 · Exercises2018-10-11 → 2018-10-14
    Gunnery exercises 141100Z to 141400Z oct in area bound by 21-19.3S 054-25.5E, 21-12.0S 054-57.0E, 21-26.0S…
  18. HYDROPAC 3708/18 · Surveys2018-10-11 → 2018-10-16
    Underwater operations in progress until further notice by M/V ile de brehat along trackline between 37-10S…
  19. HYDROPAC 3670/18 · Cable ops2018-10-09 → 2018-10-11
    Cable operations in progress until further notice by cableship ile de brehat in area between 35-30S 114-00E…
  20. HYDROPAC 3657/18 · Derelicts2018-10-08 → 2018-10-11
    Derelict 11 meter vessel mary luck adrift in vicinity 39-37.88S 080-22.14E at 080001Z oct

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