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 1416/19 · Missiles2019-04-26 → 2019-04-29
    Hazardous operations, space debris 300654Z to 300943Z apr, alternate 010831Z to 010921Z may in area bound by…
  2. HYDROPAC 1400/19 · Debris2019-04-26 → 2019-04-29
    Large cylindrical object adrift in vicinity 18-50.1S 118-06.6E at 260305Z apr
  3. HYDROPAC 1380/19 · Missiles2019-04-25 → 2019-04-26
    Hazardous operations, space debris 300854Z apr to 012121Z may in area bound by 29-25S 088-46E, 27-50S…
  4. HYDROPAC 1355/19 · Derelicts2019-04-22 → 2019-04-25
    Derelict six meter vessel partially submerged and adrift in 30-40S 114-52E at 220001Z apr
  5. HYDROPAC 1349/19 · Piracy2019-04-21 → 2019-04-28
    F/V attacked in 00-57S 048-39E at 210830Z apr
  6. HYDROPAC 1316/19 · Other2019-04-18 → 2019-04-21
    Fishing gear, marked by orange buoys, adrift in 20-59.14S 055-05.02E
  7. HYDROPAC 1294/19 · Debris2019-04-16 → 2019-04-19
    Fishing gear adrift in vicinity 14-42.25S 120-34.07E at 161203Z apr
  8. HYDROPAC 1254/19 · Other2019-04-14 → 2019-04-17
    Fishing equipment adrift in 13-47.0S 121-07.6E at 140521Z apr
  9. HYDROPAC 1253/19 · Surveys2019-04-14 → 2019-05-05
    Underwater operations in progress until further notice by M/V fugro etive in 21-31.0S 113-51.3E
  10. HYDROPAC 1168/19 · Towing2019-04-06 → 2019-04-07
    M/V indongeni towing 530 meter floating pipe in vicinity 29-22.7S 037-16.3E
  11. HYDROPAC 1164/19 · Other2019-04-06 → 2019-04-06
    530 meter long pipe adrift in 29-44.93S 039-34.38E
  12. HYDROPAC 1158/19 · Derelicts2019-04-05 → 2019-04-08
    Derelict 11 meter S/V mary luck adrift in 34-53.25S 079-21.0E at 050403Z apr
  13. HYDROPAC 1148/19 · Nav aids2019-04-05 → 2019-04-07
    Perth dgps station 31-47.9S 115-56.0E inoperative
  14. HYDROPAC 1145/19 · Nav aids2019-04-05 → 2020-06-05
    16 buoys,fl 3, established in 20-24.49S 114-50.95E
  15. HYDROPAC 1143/19 · Exercises2019-04-04 → 2019-04-11
    Gunnery exercises 050400Z to 050800Z, 0200Z to 1800Z daily 06 and 07, 080400Z to 080800Z, 101400Z to 101800Z…
  16. HYDROPAC 1101/19 · Derelicts2019-04-01 → 2019-04-04
    Derelict 20 meter vessel, blue hull adrift in 22-50.3S 051-28.2E
  17. HYDROPAC 1092/19 · Other2019-04-01 → 2019-04-04
    500 meter long pipe adrift in 30-49.31S 040-30.81E
  18. HYDROPAC 1084/19 · Nav aids2019-04-01 → 2019-04-02
    Exmouth dgps station 21-53.1S 114-08.0E unreliable
  19. HYDROPAC 1067/19 · Other2019-03-30 → 2019-06-12
    Port hedland C1 light 19-59.5S 118-26.2E at reduced intensity
  20. HYDROPAC 1066/19 · Other2019-03-30 → 2019-04-02
    Fishing equipment adrift in 13-48.8S 121-13.9E at 300639Z mar

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