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 2625/23 · Missiles2023-11-16 → 2023-11-27
    Hazardous operations, space debris 0558Z to 1027Z daily 21 thru 27 nov in area bound by 08-53.00S…
  2. HYDROPAC 3609/23 · Surveys2023-11-16 → 2023-11-23
    Underwater operations in progress until further notice by M/V skandi singapore in area bound by 20-29.63S…
  3. HYDROPAC 3569/23 · Missiles2023-11-13 → 2023-11-16
    Hazardous operations, space debris 160200Z to 160800Z nov in area bound by 22-39.00S 085-11.00E, 22-27.00S…
  4. HYDROPAC 3556/23 · Missiles2023-11-12 → 2023-11-23
    Hazardous operations, space debris 0558Z to 1027Z daily 17 thru 23 nov in area bound by 08-53.00S…
  5. HYDROLANT 2585/23 · Missiles2023-11-12 → 2023-11-23
    Hazardous operations, space debris 0558Z to 1027Z daily 17 thru 23 nov in area bound by 08-53.00S…
  6. HYDROPAC 3534/23 · Surveys2023-11-09 → 2023-11-17
    Underwater operations in progress until further notice by M/V skandi hercules in 19-49.50S 114-34.40E
  7. HYDROPAC 3533/23 · Surveys2023-11-09 → 2023-11-26
    Underwater operations in progress until further notice by M/V fugro kwilena in area bound by 20-24.00S…
  8. HYDROPAC 3502/23 · Exercises2023-11-07 → 2023-11-11
    Hazardous operations 11 thru 15 nov: a. 1819Z to 2022Z daily in area bound by 34-44.00N 120-38.00W,…
  9. NAVAREA XII 789/23 · Exercises2023-11-07 → 2023-11-11
    Hazardous operations 11 thru 15 nov: a. 1819Z to 2022Z daily in area bound by 34-44.00N 120-38.00W,…
  10. HYDROPAC 3501/23 · Missiles2023-11-06 → 2023-11-12
    Hazardous operations, space debris 2057Z to 2216Z daily 11 thru 13 nov in area bound by 46-19.00S…
  11. HYDROPAC 3485/23 · Derelicts2023-11-04 → 2023-11-07
    Derelict vessel partially submerged and adrift in 13-52.55S 125-36.03E at 041235Z nov
  12. HYDROPAC 3479/23 · Exercises2023-11-04 → 2023-11-07
    Hazardous operations 09 thru 13 nov: a. 1817Z to 2022Z daily in area bound by 34-44.00N 120-38.00W,…
  13. NAVAREA XII 778/23 · Exercises2023-11-04 → 2023-11-07
    California 1. hazardous operations 09 thru 13 nov a. 1817Z to 2022Z in area bound by: 34-44.00N 120-38.00W,…
  14. HYDROPAC 3469/23 · Missiles2023-11-03 → 2023-11-08
    Hazardous operations, space debris 0558Z to 1027Z daily 08 thru 14 nov in area bound by 08-53.00S…
  15. HYDROLANT 2511/23 · Missiles2023-11-03 → 2023-11-08
    Hazardous operations, space debris 0558Z to 1027Z daily 08 thru 14 nov in area bound by 08-53.00S…
  16. HYDROPAC 3456/23 · Missiles2023-11-02 → 2023-11-06
    Hazardous operations, space debris 2057Z to 2216Z daily 07 thru 13 nov in area bound by 46-19.00S…
  17. HYDROPAC 3423/23 · Derelicts2023-10-30 → 2023-11-02
    Derelict F/V partially submerged and adrift in 12-21.42S 123-04.94E at 300333Z oct
  18. HYDROPAC 3422/23 · Surveys2023-10-30 → 2023-11-02
    Underwater operations in progress until further notice by M/V sapura constructor in 21-27.33S 113-49.58E
  19. HYDROPAC 3418/23 · Surveys2023-10-29 → 2023-11-07
    Survey operations in progress until further notice by M/V adrianus towing 200 meter long cable in area bound…
  20. HYDROLANT 2460/23 · Missiles2023-10-28 → 2023-11-04
    Hazardous operations, space debris 2215Z to 0515Z daily 02 thru 09 nov in area bound by 08-53.00S…

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