Indian Ocean

IHO sea area 45 · 20° to 147° E, -60° to 10° N

in force
23
last 12 months
23
since 1997
3,519
categories
15

In force now · 23

  1. AUSCOAST 279/26 · Surveys2026-08-19
    Special purpose vessel fugro kwilena / MLOV8 / 503147420 conducting underwater operations in an area bounded…
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  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%
Surveys37811%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,496 cancelled

  1. HYDROPAC 1229/21 · Missiles2021-04-23 → 2021-04-29
    Hazardous operations, rocket launching 0400Z to 0517Z daily 28 apr to 28 may in area bound by 27-43S…
  2. HYDROPAC 1223/21 · Surveys2021-04-22 → 2021-04-23
    Underwater operations 23 apr until further notice by M/V maersk master in 19-51.31S 114-31.01E
  3. HYDROPAC 1216/21 · Missiles2021-04-21 → 2021-04-27
    Hazardous operations, space debris 231020Z to 231108Z apr, alternate 260909Z to 260957Z and 270846Z to…
  4. HYDROPAC 1209/21 · Derelicts2021-04-21 → 2021-04-21
    Derelict vessel partially submerged and adrift in 03-40.7N 050-54.4E at 190753Z apr
  5. HYDROPAC 1180/21 · Derelicts2021-04-17 → 2021-04-20
    Derelict 12 meter vessel partially submerged and adrift in 15-23.22S 120-53.73E at 172240Z apr
  6. HYDROPAC 1176/21 · Missiles2021-04-17 → 2021-04-21
    Hazardous operations, space debris 221043Z to 221130Z apr, alternate 231020Z to 231108Z and 260909Z to…
  7. HYDROPAC 1175/21 · Surveys2021-04-17 → 2021-05-29
    Survey operations in progress until further notice by M/V geo coral towing 12 five mile long cables in area…
  8. HYDROPAC 1141/21 · Surveys2021-04-14 → 2021-04-18
    Underwater operations in progress until further notice by M/V bhagwan dryden in area bound by 19-53.2S…
  9. HYDROPAC 1095/21 · Nav aids2021-04-10 → 2022-03-25
    Rottnest island light temporarily changed to fl w 7.5 sec 20 miles in 32-00.4S 115-30.3E
  10. HYDROPAC 1079/21 · Surveys2021-04-09 → 2021-04-30
    Underwater operations in progress until further notice in area bound by 31-25S 114-50E, 32-05S 114-50E,…
  11. HYDROPAC 1048/21 · Surveys2021-04-06 → 2021-04-08
    Underwater operations in progress until 07 apr by M/V antsiva along trackline joining 19-45.78S 054-07.53E,…
  12. HYDROPAC 1028/21 · Other2021-04-05 → 2021-04-05
    M/V everest on fire in 58-01.06S 098-04.27E at 050415Z apr
  13. HYDROPAC 1005/21 · Missiles2021-04-02 → 2021-04-07
    Hazardous operations, space debris 071740Z to 071912Z apr, alternate 081740Z to 081857Z, 091740Z to 091842Z,…
  14. HYDROPAC 970/21 · Debris2021-03-29 → 2021-04-01
    Wooden debris adrift in 21-10.50S 055-12.33E on 29 mar 21
  15. HYDROPAC 963/21 · Surveys2021-03-28 → 2021-05-12
    Underwater operations in progress until further notice by M/V audacia in area bound by 20-31.2S 114-46.6E,…
  16. HYDROPAC 952/21 · Nav aids2021-03-26 → 2021-04-10
    Rottnest island light 32-00.4S 115-30.3E unreliable
  17. HYDROPAC 875/21 · Missiles2021-03-19 → 2021-03-24
    Hazardous operations, space debris 241032Z to 241209Z mar, alternate 251010Z to 251147Z, 260949Z to 261126Z,…
  18. HYDROPAC 863/21 · Missiles2021-03-18 → 2021-03-19
    Hazardous operations, space debris 232352Z to 240119Z mar, alternate 242330Z to 250047Z, 252309Z to 260025Z,…
  19. HYDROPAC 857/21 · Missiles2021-03-18 → 2021-03-23
    Hazardous operations, space debris 1430Z to 1630Z daily 20 thru 23 mar in area within 26 miles of trackline…
  20. HYDROPAC 841/21 · Missiles2021-03-16 → 2021-03-18
    Hazardous operations, space debris 230013Z to 230130Z mar, alternate 232352Z to 240119Z, 242330Z to 250047Z,…

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