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 617/09 · Nav aids2009-03-25 → 2009-05-23
    Nga chart 74560 (10TH ed)
  2. HYDROPAC 611/09 · Other2009-03-23 → 2009-03-24
    Vessel lewek snipe reports crewman requiring medical assistance in 14-00S 115-25E at 230700Z mar
  3. HYDROPAC 563/09 · Other2009-03-17 → 2009-03-17
    M/V natasha reported fire in engine room in 05-49.5N 081-41.4E
  4. HYDROPAC 525/09 · Piracy2009-03-12 → 2009-03-15
    A merchant vessel reported coming under fire while underway in 04-02S 046-33E at 112240Z mar
  5. HYDROPAC 417/09 · Cable ops2009-02-22 → 2009-05-30
    Cable laying operations in progress until further notice by M/V audacia in 19-55S 115-08E
  6. HYDROPAC 343/09 · Derelicts2009-02-14 → 2009-02-21
    Derelict nine meter S/V austral, green hull, adrift in 42-05S 140-59E at 120800Z feb
  7. HYDROPAC 340/09 · Derelicts2009-02-13 → 2009-02-14
    Nine meter S/V austral, green hull, adrift in 42-05S 140-59E at 120800Z feb
  8. HYDROPAC 314/09 · Nav aids2009-02-09 → 2009-02-09
    Nga chart 74590 (2ND ed)
  9. HYDROPAC 280/09 · Other2009-02-04 → 2009-02-14
    Moorings established at least 75 meters below surface: a. 46-33.8S 071-51.8E
  10. HYDROPAC 265/09 · Other2009-02-02 → 2009-02-02
    M/V odigitria reports crewman requiring medical assistance in 34-25S 041-28E at 021244Z feb
  11. HYDROPAC 255/09 · Exercises2009-01-31 → 2009-02-03
    Gunnery exercises 030800Z to 031500Z feb in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  12. HYDROPAC 223/09 · Derelicts2009-01-28 → 2009-01-29
    Derelict S/V lunatic adrift vicinity 32-00S 103-03E at 270220Z jan
  13. HYDROPAC 212/09 · Derelicts2009-01-27 → 2009-02-03
    Derelict 14 meter S/V adrift in 25-18S 052-10E at 231200Z jan
  14. HYDROPAC 191/09 · Other2009-01-23 → 2009-02-07
    M/V azteca reports crewman with broken legs in 09-30.2S 049-42.4E
  15. HYDROPAC 190/09 · Exercises2009-01-23 → 2009-01-28
    Gunnery exercises 280800Z to 281300Z jan in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  16. HYDROPAC 182/09 · Nav aids2009-01-22 → 2009-01-22
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  17. HYDROPAC 142/09 · Derelicts2009-01-16 → 2009-01-23
    Derelict eight meter vessel, white hull, adrift in 20-49.903S 054-36.910E at 161400Z jan
  18. HYDROPAC 140/09 · Nav aids2009-01-16 → 2009-01-24
    Nga chart 74550 (4TH ed)
  19. HYDROPAC 107/09 · Nav aids2009-01-13 → 2009-01-13
    Nga chart 74593 (1ST ed)
  20. HYDROPAC 61/09 · Nav aids2009-01-07 → 2009-01-08
    Nga chart 74485 (3RD ed)

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