Indian Ocean

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

in force
21
last 12 months
56
since 1997
3,589
categories
15

In force now · 21

  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. 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. 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 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.
  16. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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
25
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Derelicts62217%
Missiles56016%
Nav aids46713%
Surveys41211%
Other37610%
Exercises35710%
Piracy34110%
Cable ops1955%
Debris1093%
Icebergs822%
Wrecks371%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,568 cancelled

  1. HYDROPAC 1528/12 · Towing2012-06-01 → 2012-06-02
    32 meter tug tetra 2, blue hull, towing rig kinoa unreported
  2. HYDROPAC 1486/12 · Nav aids2012-05-28 → 2012-05-31
    Australia-northwest Coast
  3. HYDROPAC 1423/12 · Nav aids2012-05-20 → 2012-05-30
    Australia-northwest Coast
  4. HYDROPAC 1389/12 · Derelicts2012-05-17 → 2012-05-20
    Derelict F/V, blue hull, partially submerged and adrift in 09-16.4S 104-09.4E at 170534Z may
  5. HYDROPAC 1388/12 · Derelicts2012-05-17 → 2012-05-20
    Derelict F/V, partially submerged and adrift in 10-08.4S 105-32.2E at 170432Z may
  6. HYDROPAC 1376/12 · Derelicts2012-05-16 → 2012-05-19
    Derelict 15 meter F/V partially submerged and adrift in 10-13.0S 105-49.1E at 160805Z may
  7. HYDROPAC 1366/12 · Derelicts2012-05-15 → 2012-05-18
    Derelict 30 meter F/V, blue hull with red stripe, partially submerged and adrift in 09-15.24S 104-40.66E at…
  8. HYDROPAC 1358/12 · Derelicts2012-05-14 → 2012-05-15
    Derelict 30 meter F/V, blue hull with red stripe, partialy submerged and adrift in 09-20.01S 105-06.14E at…
  9. HYDROPAC 1335/12 · Exercises2012-05-11 → 2012-05-14
    Gunnery exercises 140700Z to 141200Z may in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  10. HYDROPAC 1334/12 · Cable ops2012-05-11 → 2012-05-31
    Cable operations 12 may until further notice by cableship chamarel vicinity 04-04.96S 039-42.22E
  11. HYDROPAC 1331/12 · Other2012-05-11 → 2012-05-11
    Vessel taking on water vicinity 09-58S 105-10E at 111343Z may
  12. HYDROPAC 1329/12 · Derelicts2012-05-11 → 2012-05-14
    Derelict vessel sea star veritas adrift vicinity 28-51.5S 036-01.6E
  13. HYDROPAC 1311/12 · Nav aids2012-05-10 → 2012-05-10
    Australia-northwest Coast
  14. HYDROPAC 1290/12 · Cable ops2012-05-07 → 2012-05-28
    Tanzania to seychelles
  15. HYDROPAC 1289/12 · Missiles2012-05-07 → 2012-05-11
    Hazardous operations 092000Z to 111959Z may in area bound by 22-45S 054-45E, 22-45S 056-40E, 24-20S 056-40E,…
  16. HYDROPAC 1262/12 · Nav aids2012-05-04 → 2012-05-12
    Australia-northwest Coast
  17. HYDROPAC 1182/12 · Piracy2012-04-24 → 2012-04-28
    Possible mothership activity in 04-49N 054-47E at 241949Z apr
  18. HYDROPAC 1127/12 · Surveys2012-04-19 → 2012-04-28
    Survey operations in progress until further notice by M/V western regent towing 8000 meter long cables in…
  19. HYDROPAC 1108/12 · Exercises2012-04-18 → 2012-04-19
    Hazardous operations
  20. HYDROPAC 1095/12 · Derelicts2012-04-17 → 2012-04-20
    Derelict eight meter vessel seastar, white hull, adrift vicinity 29-09.3S 038-13.1E

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