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 184/10 · Piracy2010-01-30 → 2010-01-31
    Hijacked vessel, blue hull with white superstructure, in 04-19N 052-13E at 301406Z jan
  2. HYDROPAC 178/10 · Piracy2010-01-30 → 2010-01-30
    Vessel, blue hull with white superstructure, hijacked in 02-45N 052-12E at 300500Z jan
  3. HYDROPAC 171/10 · Piracy2010-01-29 → 2010-02-06
    Possible pirate activity vicinity 04-31N 051-03E, approximately 157 miles southeast of hobyo, somalia, at…
  4. HYDROPAC 170/10 · Piracy2010-01-29 → 2010-01-30
    Vessel, blue hull with white superstructure, hijacked in 05-17N 050-31E at 291354Z jan
  5. HYDROPAC 159/10 · Exercises2010-01-27 → 2010-01-29
    Gunnery exercises 0830Z to 1130Z daily 28 and 29 jan in area bound by 21-12.0S 054-57.0E, 21-26.0S…
  6. HYDROPAC 127/10 · Surveys2010-01-23 → 2010-01-24
    Underwater operations in progress until further notice by M/V geobay in 21-28S 114-49E
  7. HYDROPAC 124/10 · Surveys2010-01-23 → 2010-01-23
    Underwater operations in progress until further notice by M/V geobay vicinity 19-55S 115-23E
  8. HYDROPAC 118/10 · Piracy2010-01-22 → 2010-01-30
    Possible mothership activity 125 miles east of raas garrey, somalia (09-18N 050-45E) at 221600Z jan
  9. HYDROPAC 110/10 · Nav aids2010-01-20 → 2010-01-21
    Nga chart 74593 (1ST ed)
  10. HYDROPAC 94/10 · Derelicts2010-01-18 → 2010-01-19
    Derelict 12.5 meter vessel tlc, white hull, adrift in 41-13.9S 088-17.6E at 170846Z jan
  11. HYDROPAC 92/10 · Derelicts2010-01-18 → 2010-01-21
    Derelict 40 meter vessel, white hull with two green stripes, adrift in 22-39.1S 054-08.1E
  12. HYDROPAC 89/10 · Cable ops2010-01-18 → 2010-01-24
    Seismic survey in progress until further notice by M/V geo celtic towing 3.5 mile long cables along…
  13. HYDROPAC 59/10 · Piracy2010-01-12 → 2010-01-23
    Mothership activity vicinity 06-30N 049-13E at 102000Z jan
  14. HYDROPAC 10/10 · Piracy2010-01-02 → 2010-01-17
    Vessel attacked and boarded in 01-52N 061-41E at 012142Z jan
  15. HYDROPAC 6/10 · Derelicts2010-01-01 → 2010-01-04
    Derelict 15 meter vessel adrift in 12-01.6S 122-56.7E at 311415Z dec
  16. HYDROPAC 2436/09 · Derelicts2009-12-30 → 2010-01-02
    Derelict 25 meter vessel, white hull with two green stripes, adrift in 22-28.87S 057-58.66E at 271512Z dec
  17. HYDROPAC 2434/09 · Piracy2009-12-28 → 2010-01-09
    M/V possibly attacked by pirates in 03-22S 059-44E at 281710Z dec
  18. HYDROPAC 2407/09 · Other2009-12-23 → 2010-01-01
    Mothership activity vicinity 04-01S 048-47E at 211310Z dec
  19. HYDROPAC 2396/09 · Piracy2009-12-21 → 2009-12-23
    Possible mothership activity vicinity 06-30S 052-41E at 211355Z dec
  20. HYDROPAC 2354/09 · Icebergs2009-12-15 → 2009-12-18
    Iceberg sighted in 50-07.52S 065-04.76E

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