Indian Ocean

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

in force
23
last 12 months
27
since 1997
3,523
categories
15

In force now · 23

  1. NAVAREA X 96/26 · Missiles2026-08-20
    NAVAREA X 96/26
  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. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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%
Missiles54415%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 1852/18 · Derelicts2018-05-15 → 2018-06-01
    M/V blue ocean, taking on water and adrift in 08-12S 108-12E
  2. HYDROPAC 1849/18 · Surveys2018-05-14 → 2018-05-17
    Survey operations in progress until further notice by M/V sanco atlantic towing five mile long cable in are…
  3. HYDROLANT 1498/18 · Missiles2018-05-14 → 2018-05-17
    Hazardous operations, satellite re-entry 192155Z to 192239Z may, alternates 202155Z to 202239Z, 212155Z to…
  4. HYDROPAC 1832/18 · Missiles2018-05-14 → 2018-05-17
    Hazardous operations, satellite re-entry: a. 192144Z to 192228Z may, alternates 202144Z to 202228Z, 212144Z…
  5. HYDROPAC 1794/18 · Exercises2018-05-11 → 2018-05-16
    Gunnery exercises 140900Z to 141200Z and 160200Z to 160800Z may in area bound by 21-19.30S 054-25.54E,…
  6. HYDROPAC 1747/18 · Debris2018-05-07 → 2018-05-10
    Fishing net adrift in 15-35.25S 118-10.78E at 070611Z may
  7. HYDROPAC 1720/18 · Nav aids2018-05-05 → 2018-05-05
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  8. HYDROPAC 1704/18 · Cable ops2018-05-03 → 2018-05-14
    Cable operations in progress until further notice by M/V ogs explora along trackline joining 33-03.29S…
  9. HYDROPAC 1680/18 · Surveys2018-04-30 → 2018-05-08
    Survey operations in progress until 12 may by M/V sanco atlantic and M/V fellowship towing five mile long…
  10. HYDROPAC 1678/18 · Exercises2018-04-30 → 2018-05-05
    Gunnery exercises 030300Z to 031800Z, 040400Z to 041800Z and 050800Z to 051200Z may in area bound by…
  11. HYDROPAC 1629/18 · Surveys2018-04-26 → 2018-04-30
    Survey operations in progress until 12 may by M/V sanco atlantic towing five mile long cable in area bound…
  12. HYDROPAC 1590/18 · Derelicts2018-04-24 → 2018-05-11
    S/V ouisititi 2 disabled and adrift due to engine failure in 08-32S 110-58E at 240304Z apr
  13. HYDROPAC 1584/18 · Derelicts2018-04-23 → 2018-04-26
    Derelict F/V MADHUSHIKA4 adrift in vicinity 04-30N 088-30E on 22 apr
  14. HYDROPAC 1569/18 · Derelicts2018-04-22 → 2018-04-25
    Derelict 50 meter vessel, red hull, partially submerged and adrift in 19-45.9S 053-33.3E
  15. HYDROPAC 1527/18 · Surveys2018-04-19 → 2018-04-26
    Survey operations in progress until 12 may by M/V sanco atlantic towing five mile long cable in area bound…
  16. HYDROPAC 1524/18 · Wrecks2018-04-19 → 2019-03-22
    Dangerous wrecks reported in: a. 20-18.91S 057-47.91E
  17. HYDROPAC 1413/18 · Nav aids2018-04-12 → 2018-04-16
    Port hedland C2 light 19-59.6S 118-26.4E unlit
  18. HYDROPAC 1378/18 · Cable ops2018-04-10 → 2018-05-17
    Cable operations in progress until further notice by cableship ile de batz along trackline between 31-40.8S…
  19. HYDROPAC 1261/18 · Derelicts2018-04-02 → 2018-04-05
    Derelict F/V lakshi DUWA1 adrift in 04-20N 079-25E at 010430Z apr
  20. HYDROPAC 1220/18 · Nav aids2018-03-29 → 2018-04-01
    Temporary buoy established in 20-48.9S 109-40.3E

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