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 3659/19 · Missiles2019-11-06 → 2019-11-12
    Hazardous operations, space debris 111656Z to 111740Z nov, alternate 121634Z to 121719Z nov in area bound by…
  2. HYDROPAC 3655/19 · Missiles2019-11-05 → 2019-11-10
    Missile operations 080001Z to 092359Z nov in areas within: a. five miles of 17-39.24N 083-37.81E
  3. HYDROPAC 3647/19 · Exercises2019-11-04 → 2019-11-09
    Hazardous operations 0630Z to 1030Z daily 08 and 09 nov in areas bound by: a. 17-46.80N 083-26.47E,…
  4. HYDROPAC 3610/19 · Nav aids2019-11-01 → 2019-11-03
    Point d'entrecasteaux light 34-50-20S 116-00-14E unlit
  5. HYDROPAC 3607/19 · Surveys2019-10-31 → 2019-11-05
    Survey operations in progress until 04 nov by M/V marion dufresne in area bound by 20-18S 055-32E, 20-42S…
  6. HYDROPAC 3532/19 · Derelicts2019-10-27 → 2019-10-30
    Derelict F/V, red and white hull, adrift in 22-39.22S 051-34.15E
  7. HYDROPAC 3483/19 · Surveys2019-10-21 → 2019-11-09
    Underwater operations in progress until further notice by M/V investigator in area bound by 13-05S 120-28E,…
  8. HYDROPAC 3439/19 · Exercises2019-10-18 → 2019-10-21
    Hazardous operations 0630Z to 1230Z daily 23 thru 25 oct in areas bound by: a. 17-46.80N 083-26.47E,…
  9. HYDROPAC 3368/19 · Derelicts2019-10-13 → 2019-10-16
    Derelict F/V partially submerged and adrift in vicinity 21-55.04S 053-03.46E
  10. HYDROPAC 3245/19 · Derelicts2019-10-01 → 2019-10-04
    Derelict M/V nahanara adrift in vicinity 05-29N 059-33E
  11. HYDROPAC 3227/19 · Debris2019-09-29 → 2019-10-02
    Large cylindrical mooring buoy adrift in vicinity 13-34S 121-11E at 290730Z sep
  12. HYDROPAC 3221/19 · Derelicts2019-09-29 → 2019-10-02
    Derelict 37 meter F/V jin yuan and kaohsiung, white and red hull, adrift in 19-54.60S 056-21.10E at 260700Z…
  13. HYDROPAC 3201/19 · Other2019-09-27 → 2019-09-30
    Navigation prohibited 300001Z to 301800Z sep in area bound by 20-53.35S 055-07.23E, 20-54.07S 055-12.55E,…
  14. HYDROPAC 3200/19 · Derelicts2019-09-27 → 2019-09-30
    Derelict ten meter F/V, white hull, adrift in 21-04.8S 054-07.4E
  15. HYDROPAC 3175/19 · Derelicts2019-09-26 → 2019-09-29
    Derelict 37 meter F/V jin yuan and kaohsiung, white and red hull, adrift in 19-54.60S 056-21.10E at 260700Z…
  16. HYDROPAC 3136/19 · Derelicts2019-09-24 → 2019-09-26
    Derelict 37 meter F/V jin yuan and kaohsiung, white and red hull, adrift in 19-54.60S 056-21.10E
  17. HYDROPAC 3112/19 · Nav aids2019-09-22 → 2019-09-22
    Perth dgps station 31-47.9S 115-56.0E inoperative
  18. HYDROPAC 3096/19 · Surveys2019-09-21 → 2019-10-23
    Underwater operations in progress until further notice by M/V outer limit in 19-10S 116-05E
  19. HYDROPAC 2990/19 · Nav aids2019-09-12 → 2019-09-13
    North island light 28-17.9S 113-35.4E unlit
  20. HYDROPAC 2973/19 · Nav aids2019-09-11 → 2019-09-11
    Perth dgps station 31-47.9S 115-56.0E inoperative

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