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. HYDROLANT 250/23 · Missiles2023-01-31 → 2023-02-07
    Hazardous operations, space debris 0727Z to 1403Z daily 01 thru 07 feb in area bound by 35-48.00S…
  2. HYDROPAC 338/23 · Cable ops2023-01-30 → 2023-02-11
    Cable operations in progress until 10 feb by cableship ile de batz along trackline joining 06-43.0S…
  3. HYDROPAC 271/23 · Other2023-01-25 → 2023-01-28
    Three meter buoy with rope adrift in vicinity 14-39.78S 122-04.60E at 250254Z jan
  4. HYDROLANT 205/23 · Missiles2023-01-25 → 2023-01-28
    Hazardous operations, space debris 0831Z to 1342Z daily 26 jan thru 01 feb in area bound by 35-48.00S…
  5. HYDROPAC 268/23 · Missiles2023-01-25 → 2023-01-28
    Hazardous operations, space debris 0831Z to 1342Z daily 26 jan thru 01 feb in area bound by 35-48.00S…
  6. HYDROPAC 260/23 · Nav aids2023-01-23 → 2023-02-15
    North west cape light 21-48.37S 114-09.61E unlit
  7. HYDROPAC 255/23 · Surveys2023-01-23 → 2023-03-01
    Survey operations 24 jan thru 28 feb by M/V marion dufresne in area bound by 28-00.00S 054-02.00E, 29-00.00S…
  8. HYDROPAC 233/23 · Exercises2023-01-20 → 2023-01-24
    Hazardous operations 240300Z to 241400Z jan in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.50E,…
  9. HYDROPAC 205/23 · Other2023-01-17 → 2023-01-20
    Fishing gear with ropes adrift in vicinity 12-19.61S 124-24.85E at 170616Z jan
  10. HYDROPAC 187/23 · Surveys2023-01-16 → 2023-01-29
    Underwater operations in progress until further notice by M/V sapura constructor along trackline joining…
  11. HYDROPAC 173/23 · Missiles2023-01-14 → 2023-01-24
    Hazardous operations, space debris 1803Z to 1933Z daily 18 thru 24 jan in area bound by 39-00.00S…
  12. HYDROLANT 123/23 · Missiles2023-01-14 → 2023-01-24
    Hazardous operations, space debris 1803Z to 1933Z daily 18 thru 24 jan in area bound by 39-00.00S…
  13. HYDROPAC 106/23 · Cable ops2023-01-09 → 2023-01-22
    Cable operations in progress until 21 jan by cableship ile de batz along trackline joining 03-58.10S…
  14. HYDROPAC 79/23 · Missiles2023-01-07 → 2023-01-09
    Hazardous operations, space debris 090400Z to 091100Z jan in area bound by 05-59.00S 090-05.00E, 05-50.00S…
  15. HYDROPAC 68/23 · Missiles2023-01-06 → 2023-01-11
    Hazardous operations, space debris 0656Z to 0709Z daily 09 thru 15 jan in area bound by 20-58.00S…
  16. HYDROPAC 67/23 · Nav aids2023-01-06 → 2023-01-09
    Point d'entrecasteaux light 34-50.30S 116-00.23E unreliable
  17. HYDROPAC 3726/22 · Missiles2022-12-29 → 2023-01-08
    Hazardous operations, space debris 1709Z to 1728Z daily 02 thru 08 jan 23 in area bound by 28-43.00S…
  18. HYDROPAC 3705/22 · Cable ops2022-12-27 → 2022-12-30
    Cable operations in progress until 29 dec by cableship ile de re along trackline joining 03-36.50N…
  19. HYDROPAC 3679/22 · Other2022-12-24 → 2022-12-27
    Fish havens with rope adrift in vicinity 10-32.80S 103-44.80E at 240400Z dec
  20. HYDROLANT 3288/22 · Missiles2022-12-24 → 2022-12-29
    Hazardous operations, space debris 0850Z to 1355Z daily 28 dec thru 03 jan 23

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