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 961/22 · Exercises2022-04-08 → 2022-04-08
    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…
  2. HYDROPAC 955/22 · Exercises2022-04-08 → 2022-04-13
    Gunnery exercises 120400Z to 131800Z apr in area bound by 21-26.0S 054-02.5E, 21-39.0S 054-33.5E, 21-12.0S…
  3. HYDROPAC 925/22 · Other2022-04-06 → 2022-04-06
    Ten meter pipe adrift in 20-58.0S 055-09.0E
  4. HYDROPAC 921/22 · Other2022-04-05 → 2022-04-08
    Ten meter long pipe adrift in 20-58S 055-09E
  5. HYDROPAC 902/22 · Derelicts2022-04-04 → 2022-04-04
    F/V, blue hull with white stripe, adrift in 34-56.60S 044-51.04E
  6. HYDROPAC 896/22 · Surveys2022-04-04 → 2022-04-04
    Underwater operations in progress until further notice by M/V joides resolution in 37-01.46S 024-59.67E
  7. HYDROPAC 893/22 · Missiles2022-04-04 → 2022-04-08
    Hazardous operations, space debris 081553Z to 081626Z apr, alternate 091530Z to 091603Z, 101508Z to 101541Z,…
  8. HYDROPAC 867/22 · Missiles2022-04-01 → 2022-04-04
    Hazardous operations, space debris 061641Z to 061714Z apr, alternate 071615Z to 071648Z, 081553Z to 081626Z,…
  9. HYDROPAC 839/22 · Other2022-03-30 → 2022-04-15
    Vessel requesting assistance in 15-07.5S 051-56.8E
  10. HYDROPAC 828/22 · Missiles2022-03-29 → 2022-03-29
    Hazardous operations, space debris 011828Z to 081907Z apr in area bound by 27-32S 065-06E, 27-31S 065-07E,…
  11. HYDROPAC 824/22 · Cable ops2022-03-28 → 2022-06-01
    Cable operations in progress until further notice by cableship reliance along trackline joining 31-44.71S…
  12. HYDROPAC 816/22 · Debris2022-03-28 → 2022-03-31
    300 meter long net adrift in 12-39.6S 124-32.7E at 262300Z mar
  13. HYDROPAC 806/22 · Missiles2022-03-27 → 2022-04-01
    Hazardous operations, space debris 011828Z to 011907Z apr, alternate 1828Z to 1907Z daily 02 thru 08 apr in…
  14. HYDROPAC 733/22 · Other2022-03-20 → 2022-03-25
    Partially submerged vessel in 16-35.10S 119-48.01E at 200800Z mar
  15. HYDROPAC 718/22 · Other2022-03-18 → 2022-03-25
    S/V arohaxxx requesting assistance due to engine failure in vicinity 05-29.3N 085-15.5E
  16. HYDROPAC 710/22 · Surveys2022-03-17 → 2022-03-28
    Underwater operations in progress until further notice by M/V joides resolution in 35-40.89S 029-39.03E
  17. HYDROPAC 694/22 · Surveys2022-03-16 → 2022-03-19
    Underwater operations in progress until further notice by M/V skandi africa in vicinity 19-42.4S 115-52.5E
  18. HYDROPAC 672/22 · Missiles2022-03-14 → 2022-03-19
    Hazardous operations, space debris 190436Z to 190907Z mar, alternate 200414Z to 200855Z, 210352Z to 210833Z,…
  19. HYDROPAC 633/22 · Exercises2022-03-09 → 2022-03-11
    Gunnery exercises 110300Z to 111400Z mar in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-39.0S…
  20. HYDROPAC 614/22 · Derelicts2022-03-07 → 2022-03-11
    F/V manoj putha 09 disabled and adrift due to engine failure in 05-00N 085-25E at 070510Z 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.