Indian Ocean

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

in force
23
last 12 months
27
since 1997
3,523
categories
15

In force now · 23

  1. NAVAREA X 96/26 · Missiles2026-08-20
    Space debris danger area 100 nautical miles either side of a line in the Southern Ocean from Cape Darnley to Tasmania, daily 25-31 August 2026 0809-1608 UTC.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  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%
Missiles54415%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 2213/17 · Debris2017-06-24 → 2017-06-27
    Ten meter partially submerged tree in 15-39.13S 120-39.18E at 240900Z jun
  2. HYDROPAC 2210/17 · Other2017-06-24 → 2017-06-27
    12 meter tree adrift in 12-24.66S 118-44.20E at 240319Z jun
  3. HYDROPAC 2209/17 · Other2017-06-24 → 2017-06-27
    Eight meter tree adrift in 16-20.01S 118-21.95E at 240335Z jun
  4. HYDROPAC 2196/17 · Other2017-06-23 → 2017-06-26
    Six meter tree partially submerged and adrift in 13-58.37S 123-22.72E at 230358Z jun
  5. HYDROPAC 2172/17 · Other2017-06-21 → 2017-06-21
    F/V lu rong yuan yu 895 on fire in 13-24S 068-12E
  6. HYDROPAC 2131/17 · Exercises2017-06-18 → 2017-06-25
    Hazardous operations 0330Z to 0730Z daily 23 thru 25 jun: a. in area within ten miles of 13-43.9N 080-14.2E
  7. HYDROPAC 2069/17 · Icebergs2017-06-14 → 2017-06-17
    Iceberg reported in 47-37S 054-38E at 131300Z jun
  8. HYDROPAC 2014/17 · Nav aids2017-06-08 → 2017-06-09
    Cape leeuwin light 34-22.5S 115-08.2E unlit
  9. HYDROPAC 1971/17 · Other2017-06-05 → 2017-06-06
    F/V lakmini 04, yellow, red and white hull reports crewman requiring medical assistance in 05-55S 078-31E at…
  10. HYDROPAC 1934/17 · Missiles2017-06-01 → 2017-06-04
    Hazardous operations space debris 032129Z to 032227Z jun, alternate 042106Z to 042229Z jun in area bound by…
  11. HYDROPAC 1932/17 · Missiles2017-06-01 → 2017-06-01
    Hazardous operations space debris 012217Z to 012315Z jun, alternate 032129Z to 032227Z jun in area bound by…
  12. HYDROPAC 1929/17 · Derelicts2017-06-01 → 2017-06-04
    F/V lakderana 2 adrift in 01-58N 087-44E at 310430Z may
  13. HYDROPAC 1925/17 · Derelicts2017-06-01 → 2017-06-04
    F/V harshana chathuranga 4 adrift in 02-31N 081-48E at 300830Z may
  14. HYDROPAC 1865/17 · Other2017-05-28 → 2017-05-31
    Ten meter long tree adrift in 14-50.5S 123-36.5E at 280503Z may
  15. HYDROPAC 1799/17 · Derelicts2017-05-23 → 2017-06-09
    M/V termeh disabled and adrift in 26-44S 035-17E
  16. HYDROPAC 1734/17 · Surveys2017-05-18 → 2017-05-23
    Underwater operations in progress until further notice by M/V skandi singapore in 19-49.45S 115-30.30E
  17. HYDROPAC 1722/17 · Missiles2017-05-17 → 2017-05-25
    Hazardous operations, rocket launching 0030Z to 0530Z daily 22 may thru 03 jun in areas bound by: a.…
  18. HYDROPAC 1720/17 · Missiles2017-05-16 → 2017-05-26
    Hazardous operations space debris 0030Z to 0530Z daily 22 may thru 03 jun in areas bound by: a. 44-13S…
  19. HYDROPAC 1706/17 · Surveys2017-05-15 → 2017-06-04
    Underwater operations in progress until further notice by M/V southern ocean in 21-26.95S 113-49.48E
  20. HYDROPAC 1696/17 · Other2017-05-14 → 2017-05-17
    Large trees adrift in: a. 15-06.20S 121-02.92E at 140848Z may

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