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
    Space debris danger area 100 nautical miles either side of a line in the Southern Ocean from Cape Darnley to Tasmania, daily 25-31 August 2026 0809-1608 UTC.
  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 642/17 · Icebergs2017-02-22 → 2017-02-25
    Iles de kerguelen DNC 03
  2. HYDROPAC 624/17 · Icebergs2017-02-21 → 2017-02-24
    Iceberg reported in 48-03S 069-11E at 210300Z feb
  3. HYDROPAC 602/17 · Missiles2017-02-18 → 2017-02-19
    Hazardous operations space debris 191505Z to 191547Z feb, alternate 211421Z to 211504Z feb in area within…
  4. HYDROPAC 601/17 · Exercises2017-02-18 → 2017-02-19
    Hazardous operations 191505Z to 191547Z feb, alternate 211412Z to 211504Z feb in area bound by 32-03S…
  5. HYDROPAC 592/17 · Exercises2017-02-17 → 2017-02-19
    Hazardous operations 181523Z to 181613Z feb, alternate 191505Z to 191547Z feb in area bound by 32-03S…
  6. HYDROPAC 582/17 · Nav aids2017-02-17 → 2017-02-19
    Karratha dgps staion 20-42.4S 116-47.0E inoperative
  7. HYDROPAC 556/17 · Missiles2017-02-15 → 2017-02-19
    Hazardous operations space debris 181523Z to 181613Z feb, alternate 191505Z to 191547Z feb in area within…
  8. HYDROPAC 541/17 · Exercises2017-02-14 → 2017-02-20
    Hazardous operations 0730Z to 1130Z daily 18 thru 20 feb in areas bound by: a. 17-40.20N 083-26.34E,…
  9. HYDROPAC 528/17 · Exercises2017-02-13 → 2017-02-19
    Hazardous operations 181523Z to 181613Z feb, alternate 191505Z to 191547Z feb in area bound by 26-09S…
  10. HYDROPAC 495/17 · Derelicts2017-02-11 → 2017-02-12
    Derelict vessel partially submerged and adrift in 11-57.4S 122-58.4E at 110205Z feb
  11. HYDROPAC 482/17 · Exercises2017-02-10 → 2017-02-15
    Hazardous operations 150330Z to 150730Z feb in area within five miles of 05-30N 080-30E
  12. HYDROPAC 477/17 · Wrecks2017-02-10 → 2017-02-11
    Dangerous wreck in 11-58.28S 122-35.90E
  13. HYDROPAC 476/17 · Exercises2017-02-10 → 2017-02-17
    Hazardous operations 0330Z to 0730Z daily 15 thru 17 feb: a. within ten miles of 13-43.9N 080-14.2E
  14. HYDROPAC 420/17 · Debris2017-02-04 → 2017-02-07
    Two meter long fishing gear adrift in 14-03.6S 124-03.8E at 040347Z feb
  15. HYDROPAC 340/17 · Other2017-01-30 → 2017-02-02
    30 meter long wire rope adrift in 14-04.7S 124-36.3E 300429Z jan
  16. HYDROPAC 308/17 · Exercises2017-01-27 → 2017-02-01
    Hazardous operations 0630Z to 1030Z daily 30 jan thru 01 feb in areas bound by: a. 17-41.52N 083-39.44E,…
  17. HYDROPAC 285/17 · Nav aids2017-01-25 → 2017-01-28
    Exmouth dgps station 21-53.1S 114-08.0E inoperative
  18. HYDROPAC 284/17 · Nav aids2017-01-25 → 2017-01-27
    Karratha dgps station 20-42.4S 116-47.0E unreliable
  19. HYDROPAC 276/17 · Exercises2017-01-24 → 2017-01-27
    Hazardous operations 0630Z to 1030Z daily 29 thru 31 jan in areas bound by: a. 17-41.52N 083-39.44E,…
  20. HYDROPAC 272/17 · Exercises2017-01-24 → 2017-01-24
    Hazardous operations 0630Z to 1030Z daily 29 thru 31 jan in area bound by 06-42.3S 088-43.9E, 10-41.4S…

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