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 2064/23 · Missiles2023-06-22 → 2023-06-29
    Hazardous operations, space debris 1231Z to 1813Z daily 23 thru 29 jun in area bound by 41-54.00S…
  2. HYDROPAC 2056/23 · Surveys2023-06-22 → 2023-07-30
    Underwater operations in progress until further notice by M/V pride in 19-51.17S 114-30.91E
  3. HYDROPAC 2006/23 · Missiles2023-06-16 → 2023-06-20
    Hazardous operations, space debris 200200Z to 200800Z jun in area within 25 miles of trackline joining…
  4. HYDROPAC 2000/23 · Exercises2023-06-15 → 2023-06-18
    Gunnery exercise 170300Z to 170700Z and 180200Z to 181400Z jun in area bound by 21-12.00S 054-57.00E,…
  5. HYDROPAC 1997/23 · Exercises2023-06-15 → 2023-06-17
    Hazardous operations 170900Z to 171400Z jun in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  6. HYDROPAC 1954/23 · Derelicts2023-06-12 → 2023-06-13
    M/V energy river, disabled and adrift, reports crewman requiring medical evacuation in 32-41.78S 096-45.55E…
  7. HYDROPAC 1910/23 · Missiles2023-06-08 → 2023-06-20
    Hazardous operations, space debris 2329Z to 0048Z daily 12 thru 19 jun in area bound by 46-19.00S…
  8. HYDROLANT 1269/23 · Missiles2023-06-08 → 2023-06-17
    Hazardous operations, space debris 0637Z to 1219Z daily 11 thru 17 jun in area bound by 41-54.00S…
  9. HYDROPAC 1909/23 · Missiles2023-06-08 → 2023-06-17
    Hazardous operations, space debris 0637Z to 1219Z daily 11 thru 17 jun in area bound by 41-54.00S…
  10. HYDROPAC 1892/23 · Missiles2023-06-06 → 2023-06-07
    Hazardous operations, space debris 070300Z to 070900Z jun in area bound by 13-19.00S 087-51.00E, 08-01.00S…
  11. HYDROPAC 1848/23 · Exercises2023-06-02 → 2023-06-08
    Gunnery exercises 0330Z to 1500Z daily 05 thru 08 jun in area bound by 21-12.00S 054-57.00E, 21-26.00S…
  12. HYDROPAC 1843/23 · Derelicts2023-06-02 → 2023-06-05
    Derelict vessel partially submerged and adrift in 14-27.65S 123-57.32E at 020803Z jun
  13. HYDROPAC 1833/23 · Other2023-06-01 → 2023-06-04
    90 meter long, partially submerged, streamer adrift in 23-17.33S 056-04.51E
  14. HYDROPAC 1824/23 · Surveys2023-06-01 → 2023-06-03
    Underwater operations in progress until further notice by M/V pride in 19-51.16S 114-30.92E
  15. HYDROPAC 1823/23 · Surveys2023-06-01 → 2023-06-02
    Underwater operations in progress until further notice by M/V sapura constructor in area bound by 21-21.74S…
  16. HYDROPAC 1783/23 · Derelicts2023-05-29 → 2023-05-30
    M/V mt alisa not under command and adrift in vicinity 03-52.82N 079-08.47E at 290605Z may
  17. HYDROPAC 1728/23 · Nav aids2023-05-24 → 2023-05-24
    RACON at port hedland C1 light in 19-59.49S 118-26.17E inoperative
  18. HYDROPAC 1697/23 · Derelicts2023-05-22 → 2023-05-25
    Derelict 25 meter vessel partially submerged and adrift in vicinity 08-50.88S 105-57.11E at 220529Z may
  19. HYDROPAC 1660/23 · Missiles2023-05-19 → 2023-05-25
    Hazardous operations, space debris 1456Z to 1606Z daily 19 thru 25 may in area bound by 39-43.00S…
  20. HYDROPAC 1652/23 · Derelicts2023-05-18 → 2023-05-21
    Derelict vessel partially submerged and adrift in vicinity 08-26.67S 105-34.28E at 180558Z may

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