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 is conducting underwater operations in area from 19-47.68S 115-12.91E to 19-57.87S 115-25.37E, requesting 1.5 nautical mile clearance.
  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 835/21 · Missiles2021-03-16 → 2021-03-16
    Hazardous operations, space debris 210541Z to 210818Z mar, alternate 220520Z to 220757Z mar in area bound by…
  2. HYDROPAC 820/21 · Missiles2021-03-13 → 2021-03-14
    Hazardous operations, space debris 141048Z to 141325Z mar, alternate 151028Z to 151305Z, 160244Z to 160401Z,…
  3. HYDROPAC 785/21 · Missiles2021-03-11 → 2021-03-13
    Hazardous operations, space debris 141048Z to 141325Z mar, alternate 151028Z to 151305Z, 161007Z to 161244Z,…
  4. HYDROPAC 765/21 · Wrecks2021-03-08 → 2021-03-26
    F/V tuifu lurong yuan yu 588 reported aground in vicinity 20-09.76S 057-26.7E at 071339Z mar
  5. HYDROPAC 764/21 · Missiles2021-03-08 → 2021-03-11
    Hazardous operations, space debris 100402Z to 100639Z mar, alternate 110341Z to 110618Z, 110917Z to 111154Z,…
  6. HYDROPAC 753/21 · Missiles2021-03-08 → 2021-03-11
    Hazardous operations, space debris 131110Z to 131347Z mar, alternate 141048Z to 141325Z mar in area bound by…
  7. HYDROPAC 736/21 · Missiles2021-03-05 → 2021-03-08
    Hazardous operations, space debris 100402Z to 100639Z mar, alternate 110341Z to 110618Z, 120319Z to 120556Z,…
  8. HYDROPAC 718/21 · Missiles2021-03-04 → 2021-03-05
    Hazardous operations, space debris 090424Z to 090701Z mar, alternate 100402Z to 100639Z, 110341Z to 110618Z,…
  9. HYDROPAC 698/21 · Missiles2021-03-03 → 2021-03-04
    Hazardous operations, space debris 080445Z to 080722Z mar, alternate 090424Z to 090701Z, 100402Z to 100639Z,…
  10. HYDROPAC 695/21 · Missiles2021-03-02 → 2021-03-04
    Hazardous operations, space debris 041024Z to 041326Z mar, alternate 051004Z to 051306Z mar in area bound by…
  11. HYDROPAC 693/21 · Derelicts2021-03-02 → 2021-03-05
    Derelict lifeboat adrift in vicinity 05-30.0N 081-51.9E at 020430Z mar
  12. HYDROPAC 685/21 · Missiles2021-03-01 → 2021-03-02
    Hazardous operations, space debris 030157Z to 030430Z mar, alternate 040136Z to 040409Z, 040709Z to 041102Z,…
  13. HYDROPAC 684/21 · Missiles2021-03-01 → 2021-03-01
    Hazardous operations, space debris 030157Z to 030430Z mar, alternate 040136Z to 040409Z and 050114Z to…
  14. HYDROPAC 676/21 · Missiles2021-03-01 → 2021-03-01
    Hazardous operations, space debris 020309Z to 020452Z mar, alternate 030157Z to 030430Z, 040136Z to 040409Z…
  15. HYDROPAC 660/21 · Missiles2021-02-26 → 2021-03-01
    Hazardous operations, space debris 010241Z to 010514Z mar, alternate 020219Z to 020452Z and 030157Z to…
  16. HYDROPAC 646/21 · Missiles2021-02-26 → 2021-03-30
    Hazardous operations, space debris 28 feb thru 29 mar in area bound by 32-55S 072-45E, 33-35S 075-20E,…
  17. HYDROPAC 639/21 · Missiles2021-02-26 → 2021-02-26
    Hazardous operations, space debris 010241Z to 010514Z and 010519Z to 010611Z mar, alternate 020219Z to…
  18. HYDROPAC 633/21 · Missiles2021-02-25 → 2021-02-28
    Hazardous operations, rocket launching 280430Z to 280830Z feb in areas: a. within ten miles of 13-43.9N…
  19. HYDROPAC 632/21 · Derelicts2021-02-25 → 2021-02-28
    Derelict lifeboat adrift in vicinity 02-13.7S 050-02.1E at 240940Z feb
  20. HYDROPAC 622/21 · Missiles2021-02-24 → 2021-02-26
    Hazardous operations, space debris 010241Z to 010514Z mar, alternate 020219Z to 020452Z and 030157Z to…

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