Indian Ocean

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

in force
23
last 12 months
22
since 1997
3,518
categories
15

In force now · 23

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  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 2157/26 · Surveys2026-07-27
    Underwater operations are underway by the vessel Fugro Kwilena in the eastern Indian Ocean off Australia until further notice. A two-mile berth is requested.
  16. AUSCOAST 255/26 · Surveys2026-07-27
    Vessel Fugro Kwilena is conducting underwater operations in an area bounded by 19-56.69 S to 20-26.06 S and 114-45.09 E to 115-30.10 E, requesting 1.5 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
    Semi-submerged mooring lightbuoy fl.w in 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
    Semi-submerged mooring lightbuoy fl.w in 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%
Missiles54215%
Nav aids46113%
Surveys37711%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,495 cancelled

  1. HYDROPAC 1296/22 · Missiles2022-05-11 → 2022-05-16
    Hazardous operations, space debris 2000Z to 2355Z daily 14 thru 20 may in area bound by 29-43S 060-07E,…
  2. HYDROPAC 1254/22 · Exercises2022-05-08 → 2022-05-08
    Hazardous operations 0230Z to 0430Z and 0630Z to 0830Z daily 11 thru 14 and 17 thru 20 may in area bound by…
  3. HYDROPAC 1252/22 · Derelicts2022-05-08 → 2022-05-27
    F/V vishmitha IV, yellow and red hull, disabled and adrift in 03-33N 079-14E at 080430Z may
  4. HYDROPAC 1247/22 · Surveys2022-05-07 → 2022-05-09
    Survey operations by M/V northern endeavor in progress until 13 may in area bound by 13-13.09S 080-24.04E,…
  5. HYDROPAC 1234/22 · Exercises2022-05-06 → 2022-05-06
    Hazardous operations 0030Z to 0730Z daily 10, 11 and 17 thru 19 may in area bound by 15-24.60S 083-22.00E,…
  6. HYDROPAC 1218/22 · Surveys2022-05-04 → 2022-05-05
    Underwater operations in progress until further notice by M/V fugro etive in area bound by 19-42.60S…
  7. HYDROPAC 1216/22 · Surveys2022-05-04 → 2022-05-04
    Underwater operations in progress until further notice by M/V fugro etive in area bound by 19-42.60S…
  8. HYDROPAC 1184/22 · Missiles2022-05-02 → 2022-05-11
    Hazardous operations, space debris 0915Z to 1250Z daily 06 thru 12 may in area bound by 29-43S 060-07E,…
  9. HYDROPAC 1154/22 · Debris2022-04-28 → 2022-05-01
    Ten meter log adrift in vicinity 13-23.56S 123-09.33E at 280356Z apr
  10. HYDROPAC 1140/22 · Surveys2022-04-27 → 2022-05-01
    Survey operations in progress until 30 apr by M/V antsiva along trackline joining 19-45.78S 054-07.53E,…
  11. HYDROPAC 1116/22 · Missiles2022-04-25 → 2022-05-02
    Hazardous operations, space debris 2105Z to 0512Z daily 29 apr thru 06 may in area bound by 29-43S 060-07E,…
  12. HYDROPAC 1111/22 · Derelicts2022-04-24 → 2022-04-27
    15 meter F/V reshitha putha, blue hull with orange stripe, disabled and adrift due to engine failure in…
  13. HYDROPAC 1101/22 · Missiles2022-04-22 → 2022-04-27
    Hazardous operations, space debris 270828Z to 270900Z, alternate 280806Z to 300749Z apr in area bound by…
  14. HYDROPAC 1097/22 · Missiles2022-04-22 → 2022-04-26
    Hazardous operations, space debris 260851Z to 260925Z apr in area bound by 35-55S 095-59E, 35-39S 097-17E,…
  15. HYDROPAC 1066/22 · Missiles2022-04-18 → 2022-04-22
    Hazardous operations, space debris 231002Z to 231034Z, alternate 240939Z to 241011Z, 250917Z to 250949Z,…
  16. HYDROPAC 1049/22 · Missiles2022-04-16 → 2022-04-30
    Hazardous operations, space debris 211715Z to 212036Z apr, alternate 221654Z to 222015Z, 231632Z to 231953Z,…
  17. HYDROPAC 1047/22 · Surveys2022-04-16 → 2023-04-01
    Underwater operations in progress until further notice by M/V skandi africa in area bound by 19-25S 116-28E,…
  18. HYDROPAC 1002/22 · Surveys2022-04-12 → 2022-05-12
    Underwater glider operating until further notice in area bound by 09-30S 097-00E, 12-00S 097-00E, 12-00S…
  19. HYDROPAC 993/22 · Surveys2022-04-11 → 2022-05-09
    Survey operations in progress until further notice by M/V bgp explorer towing cable in area bound by 13-35S…
  20. HYDROPAC 962/22 · Exercises2022-04-08 → 2022-04-13
    Gunnery exercises 120400Z to 131800Z apr in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-39.0S…

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