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 3165/17 · Other2017-09-15 → 2017-09-18
    4000 meter long fishing nets marked by buoys, adrift in 20-43S 055-05E
  2. HYDROPAC 3126/17 · Exercises2017-09-12 → 2017-09-17
    Gunnery exercises 150300Z to 150800Z, 151500Z to 151800Z, 160900Z to 161900Z, 170230Z to 170800Z and 171000Z…
  3. HYDROPAC 3118/17 · Wrecks2017-09-12 → 2017-11-22
    RACON at shoal point light 28-03.5S 114-12.4E inoperative
  4. HYDROPAC 3074/17 · Derelicts2017-09-08 → 2017-09-11
    Derelict F/V sacha adrift in vicinity 04-09N 081-54E at 070130Z sep
  5. HYDROPAC 3062/17 · Other2017-09-08 → 2017-09-11
    12 six meter yellow mooring buoys within one mile of 19-49.77S 115-39.48E
  6. HYDROPAC 3033/17 · Missiles2017-09-05 → 2017-09-07
    Hazardous operations space debris 071754Z to 072226Z sep, alternate 081754Z to 082226Z aug in area bound by…
  7. HYDROPAC 3021/17 · Other2017-09-05 → 2017-09-27
    Dynamic positioning reference posts established in: a. 21-40.52S 114-44.86E
  8. HYDROPAC 2973/17 · Derelicts2017-08-31 → 2017-09-03
    F/V yamuna adrift in 04-46N 088-04E at 301200Z aug 17
  9. HYDROPAC 2936/17 · Nav aids2017-08-29 → 2017-08-29
    Exmouth dgps station 21-53.1S 114-08.0E inoperative
  10. HYDROPAC 2859/17 · Exercises2017-08-23 → 2017-08-24
    Gunnery exercises 240600Z to 241200Z aug in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  11. HYDROPAC 2846/17 · Exercises2017-08-22 → 2017-08-23
    Gunnery exercises 240600Z to 241200Z aug in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  12. HYDROPAC 2839/17 · Nav aids2017-08-22 → 2017-08-22
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  13. HYDROPAC 2834/17 · Derelicts2017-08-21 → 2017-08-24
    Derelict F/V nathula putha 2 adrift in 04-35N 084-48E at 190230Z aug
  14. HYDROPAC 2817/17 · Nav aids2017-08-19 → 2019-01-04
    RACON at bedout island light 19-35.3S 119-06.1E discontinued
  15. HYDROPAC 2807/17 · Other2017-08-18 → 2017-08-21
    Fishing gear, marked by buoys, adrift in 21-36S 055-44E
  16. HYDROPAC 2766/17 · Derelicts2017-08-16 → 2017-08-23
    S/V disabled and adrift in 01-07.5S 099-26.5E
  17. HYDROPAC 2706/17 · Missiles2017-08-09 → 2017-08-15
    Hazardous operations space debris 141718Z to 141749Z aug, alternate 151655Z to 151726Z aug in area bound by…
  18. HYDROPAC 2703/17 · Other2017-08-09 → 2017-08-10
    M/V sbi swing reports crewman requiring medical assistance in 14-28S 064-43E
  19. HYDROPAC 2696/17 · Derelicts2017-08-09 → 2017-08-12
    Derelict 30 meter vessel adrift in 20-58S 055-06E at 271700Z jul
  20. HYDROPAC 2694/17 · Nav aids2017-08-08 → 2017-08-09
    Cape leeuwin light 34-22.5S 115-08.2E unlit

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