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 2422/18 · Other2018-07-02 → 2018-07-05
    Object with 15 meter long rope adrift in 16-28.50S 120-12.45E
  2. HYDROPAC 2421/18 · Other2018-07-02 → 2018-07-02
    M/V iris bliss reports crewman requiring medical assistance in 19-47.65S 100-02.24E
  3. HYDROPAC 2308/18 · Nav aids2018-06-22 → 2018-06-26
    Point cloates light 22-42.6S 113-40.8E unlit
  4. HYDROPAC 2275/18 · Nav aids2018-06-19 → 2018-06-23
    Four buoys, yellow, fl w 3 sec, established in area within one mile of 18-43.10S 118-43.57E
  5. HYDROPAC 2195/18 · Derelicts2018-06-13 → 2018-06-16
    Derelict vessel, brown and green hull, partially submerged and adrift in 31-36.8S 046-57.0E at 121405Z jun 18
  6. HYDROPAC 2186/18 · Debris2018-06-13 → 2018-06-16
    15 meter log adrift in 12-36.13S 123-31.35E at 130430Z jun
  7. HYDROPAC 2099/18 · Derelicts2018-06-04 → 2018-06-07
    Derelict S/V island bird adrift in vicinity 11-23.7S 053-03.1E on 04 jun
  8. HYDROPAC 2098/18 · Exercises2018-06-04 → 2018-06-06
    Gunnery exercises 041300Z to 041800Z, 050900Z to 051600Z and 060200Z to 061300Z jun in area bound by…
  9. HYDROPAC 2074/18 · Exercises2018-06-01 → 2018-06-04
    Hazardous operations 0300Z to 0700Z daily 03 and 04 jun in area bound by 20-48.36N 087-02.58E, 19-03.39N…
  10. HYDROPAC 2030/18 · Derelicts2018-05-28 → 2018-05-31
    Derelict 15 meter S/V adrift in 12-40.33S 054-34.79E at 280812Z may
  11. HYDROPAC 2025/18 · Other2018-05-28 → 2018-06-15
    F/V fu-kuo no 101 reports crewman with stab wound
  12. HYDROPAC 2020/18 · Other2018-05-27 → 2018-05-28
    F/V fu-kuo no 101 reports crewman with stab wound
  13. HYDROPAC 2011/18 · Other2018-05-27 → 2018-05-27
    F/V fu-kuo no 101 reports crewman with stab wound
  14. HYDROPAC 2001/18 · Other2018-05-26 → 2018-05-27
    F/V fu-kuo no 101 reports crewman with stab wound
  15. HYDROPAC 1993/18 · Cable ops2018-05-26 → 2018-06-11
    Cable operations in progress until 10 jun by cableship ile de batz in vicinity of trackline joining 10-05.4S…
  16. HYDROPAC 1976/18 · Exercises2018-05-25 → 2018-05-28
    Gunnery exercises 280800Z to 281600Z may in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  17. HYDROPAC 1939/18 · Derelicts2018-05-22 → 2018-05-22
    S/V island bird dismasted and adrift in 13-04.2S 056-36.7E at 220500Z may
  18. HYDROPAC 1894/18 · Exercises2018-05-18 → 2018-05-24
    Gunnery exercises 230400Z to 231800Z and 240400Z to 240800Z may in area bound by 21-19.30S 054-25.54E,…
  19. HYDROPAC 1880/18 · Missiles2018-05-17 → 2018-05-23
    Hazardous operations, satellite re-entry: a. 222144Z to 222228Z may, alternate 232144Z to 232228Z may in…
  20. HYDROLANT 1539/18 · Missiles2018-05-17 → 2018-05-23
    Hazardous operations, satellite re-entry 222155Z to 222239Z alternate 232155Z to 232239Z may in area bound…

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