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
    A semi-submerged mooring light buoy with a flashing white light is at 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
    A semi-submerged mooring light buoy with a flashing white light is at 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 2220/21 · Missiles2021-08-03 → 2021-08-03
    Hazardous operations, rocket launching 030739Z to 030839Z aug in area bound by 00-46.83N 091-28.15E,…
  2. HYDROPAC 2214/21 · Surveys2021-08-02 → 2021-08-08
    Survey operations 05 thru 07 aug by M/V marion dufresne in areas within one mile of: a. 19-58S 054-18E
  3. HYDROPAC 2202/21 · Derelicts2021-07-31 → 2021-08-05
    Derelict ten meter vessel aground in 12-15.80S 123-29.90E at 310814Z aug
  4. HYDROPAC 2200/21 · Derelicts2021-07-31 → 2021-08-03
    Derelict ten meter vessel adrift in vicinity 11-53S 095-31E at 310230Z jul
  5. HYDROPAC 2197/21 · Missiles2021-07-30 → 2021-08-04
    Hazardous operations, space debris 031759Z to 031852Z aug, alternate 041736Z to 041829Z and 071626Z to…
  6. HYDROPAC 2187/21 · Missiles2021-07-30 → 2021-07-30
    Hazardous operations, space debris 311910Z to 312003Z jul, alternate 031759Z to 031852Z, 041736Z to 041829Z…
  7. HYDROPAC 2174/21 · Other2021-07-28 → 2021-07-31
    Ten meter long tree adrift in vicinity 14-20.00S 121-47.03E at 280700Z jul
  8. HYDROPAC 2152/21 · Surveys2021-07-26 → 2021-07-30
    Underwater operations 27 thru 29 jul by marion dufresne in: a. 24-10.96S 063-03.55E
  9. HYDROPAC 2150/21 · Debris2021-07-26 → 2021-07-29
    Nine meter long log adrift in vicinity 14-02.3S 121-37.0E at 260622Z jul
  10. HYDROPAC 2149/21 · Debris2021-07-26 → 2021-07-29
    Eight meter long log adrift in vicinity 14-27.5S 122-05.6E at 260602Z jul
  11. HYDROPAC 2142/21 · Surveys2021-07-25 → 2021-09-02
    Underwater operations in progress until further notice by M/V seven oceanic in 20-01.95S 115-12.15E
  12. HYDROPAC 2141/21 · Missiles2021-07-25 → 2021-07-30
    Hazardous operations, space debris 301932Z to 302025Z jul, alternate 311910Z to 312003Z jul, 031759Z to…
  13. HYDROPAC 2140/21 · Missiles2021-07-25 → 2021-07-25
    Hazardous operations, space debris 301932Z to 302025Z jul, alternate 031759Z to 031852Z and 041736Z to…
  14. HYDROPAC 2132/21 · Derelicts2021-07-23 → 2021-07-26
    Derelict F/V partially submerged and adrift in 12-13.04S 122-42.93E at 231524Z jul
  15. HYDROPAC 2102/21 · Derelicts2021-07-20 → 2021-07-21
    Derelict F/V reported partially submerged and adrift in 32-50.4S 032-35.3E
  16. HYDROPAC 2096/21 · Cable ops2021-07-20 → 2021-09-16
    Cable operations in progress until further notice by cableship reliance in area bound by 31-20S 113-40E,…
  17. HYDROPAC 2029/21 · Surveys2021-07-13 → 2021-07-29
    Underwater operations in progress until further notice by M/V seven oceans in area bound by 20-00S 115-00E,…
  18. HYDROPAC 1990/21 · Exercises2021-07-08 → 2021-07-22
    Hazardous operations 09 thru 21 jul in area bound by 01-39.72S 041-32.7E, 01-54.72S 041-32.7E, 01-54.72S…
  19. HYDROPAC 1987/21 · Exercises2021-07-08 → 2021-07-08
    Hazardous operations 09 thru 21 in area bound by 01-39.72S 041-32.70E, 01-54.72S 041-47.70E
  20. HYDROPAC 1930/21 · Nav aids2021-07-01 → 2021-07-11
    Adele island light 15-30.6S 123-09.5E unlit

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