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 1370/23 · Nav aids2023-04-25 → 2023-05-02
    Buoy, black, fl w 5 sec, temporarily established in 20-41.24S 109-47.71E
  2. HYDROPAC 1358/23 · Other2023-04-25 → 2023-04-28
    Eight meter tree adrift in vicinity 15-55.00S 123-17.00E at 250025Z apr
  3. HYDROPAC 1349/23 · Surveys2023-04-24 → 2023-05-30
    Underwater operations in progress until further notice by M/V fugro kwilena in area bound by 19-26.00S…
  4. HYDROPAC 1342/23 · Surveys2023-04-23 → 2023-04-28
    Underwater operations in progress until further notice by M/V peter faber along trackline joining 19-56.10S…
  5. HYDROPAC 1295/23 · Nav aids2023-04-18 → 2023-05-01
    North west cape light 21-48.37S 114-09.61E unlit
  6. HYDROPAC 1261/23 · Nav aids2023-04-16 → 2023-05-11
    Cape leeuwin light 34-22.50S 115-08.20E unlit
  7. HYDROPAC 1213/23 · Nav aids2023-04-13 → 2023-05-11
    North west cape light 21-48.37S 114-09.62E unreliable
  8. HYDROPAC 1200/23 · Surveys2023-04-12 → 2023-04-29
    Underwater operations in progress until further notice by M/V normand ranger in 21-28.90S 114-00.50E
  9. HYDROPAC 1160/23 · Missiles2023-04-07 → 2023-04-17
    Hazardous operations, space debris 0936Z to 1113Z daily 11 to 17 apr in area bound by 22-08.00S 179-20.00E,…
  10. HYDROPAC 1150/23 · Nav aids2023-04-06 → 2023-04-14
    Steep point light 26-08.92S 113-09.70E unlit
  11. HYDROPAC 1147/23 · Other2023-04-05 → 2024-03-14
    Navigation prohibited until further notice in area bound by 25-23.24S 047-05.93E, 25-23.24S 046-59.01E,…
  12. HYDROPAC 1129/23 · Cable ops2023-04-04 → 2023-05-06
    Cable operations in progress until further notice by cableship ile de re in area bound by 19-31.00S…
  13. HYDROPAC 1118/23 · Surveys2023-04-03 → 2023-07-03
    Underwater operations in progress until further notice by M/V skandi hercules in area bound by 21-27.50S…
  14. HYDROPAC 1076/23 · Surveys2023-03-30 → 2023-04-27
    Underwater operations in progress until further notice by M/V pride in 20-34.60S 114-46.60E
  15. HYDROPAC 1050/23 · Missiles2023-03-28 → 2023-03-29
    Hazardous operations, space debris 290600Z to 291300Z mar in area bound by 09-17.00S 089-34.00E, 09-09.00S…
  16. HYDROLANT 674/23 · Missiles2023-03-28 → 2023-04-06
    Hazardous operations, space debris 1927Z to 0215Z daily 29 mar thru 05 apr in area bound by 30-58.00S…
  17. HYDROPAC 1045/23 · Missiles2023-03-28 → 2023-04-06
    Hazardous operations, space debris 1927Z to 0215Z daily 29 mar thru 05 apr in area bound by 30-58.00S…
  18. HYDROPAC 1024/23 · Cable ops2023-03-25 → 2023-04-04
    Cable operations in progress until further notice by cableship ile de re along trackline joining 19-26.52S…
  19. HYDROPAC 1010/23 · Surveys2023-03-24 → 2023-04-29
    Survey operations in progress until further notice by M/V investigator in area bound by 41-50.00S…
  20. HYDROPAC 1009/23 · Surveys2023-03-24 → 2023-03-24
    Underwater operations in progress until further notice in area bound by 44-50.00S 141-50.00E, 44-50.00S…

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