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 2925/10 · Other2010-12-26 → 2010-12-26
    M/V four chung yong no 81 on fire in 43-43S 041-07E
  2. HYDROPAC 2924/10 · Piracy2010-12-26 → 2010-12-31
    Pirate activity in 14-53S 056-00E at 261057Z dec
  3. HYDROPAC 2920/10 · Piracy2010-12-26 → 2010-12-31
    M/V conducting mothership operations in 14-45S 055-51E at 261052Z dec
  4. HYDROPAC 2919/10 · Piracy2010-12-26 → 2010-12-29
    M/V polar conducting mothership operations in 14-28S 055-15E at 260802Z dec
  5. HYDROPAC 2914/10 · Nav aids2010-12-26 → 2011-04-05
    Nga chart 74520 (2ND ed)
  6. HYDROPAC 2913/10 · Piracy2010-12-26 → 2011-01-15
    Hijacked M/V izumi conducting mothership operations in 04-35N 048-06E at 251940Z dec
  7. HYDROPAC 2906/10 · Piracy2010-12-25 → 2010-12-31
    F/V attacked in 12-58S 051-52E at 251030Z dec
  8. HYDROPAC 2905/10 · Piracy2010-12-25 → 2010-12-26
    M/V conducting mothership operations in 12-45S 051-46E at 250650Z dec
  9. HYDROPAC 2903/10 · Piracy2010-12-25 → 2010-12-26
    Hijacked M/V izumi conducting mothership operations in 06-30N 052-18E at 242340Z dec
  10. HYDROPAC 2899/10 · Piracy2010-12-24 → 2010-12-25
    M/V polar conducting mothership operations in 11-24S 050-24E at 242050Z dec
  11. HYDROPAC 2894/10 · Piracy2010-12-24 → 2010-12-25
    Hijacked M/V izumi conducting mothership operations in 07-50N 055-08E at 241026Z dec
  12. HYDROPAC 2892/10 · Piracy2010-12-24 → 2010-12-24
    M/V polar conducting mothership operations in 09-21-24S 049-09-02E at 240842Z dec
  13. HYDROPAC 2887/10 · Piracy2010-12-23 → 2010-12-31
    Possible mothership activity in 06-21S 049-40E at 231636Z dec
  14. HYDROPAC 2856/10 · Derelicts2010-12-21 → 2010-12-24
    Derelict 25 meter wooden vessel adrift in 10-23.7S 105-21.3E at 211307Z dec
  15. HYDROPAC 2848/10 · Piracy2010-12-20 → 2010-12-31
    M/V orna hijacked in 01-46S 060-32E at 201129Z dec
  16. HYDROPAC 2833/10 · Piracy2010-12-19 → 2010-12-19
    Previously hijacked M/V izumi conducting mothership operations in 04-35.33N 058-09.54E at 182341Z dec
  17. HYDROPAC 2829/10 · Piracy2010-12-18 → 2010-12-19
    Previously hijacked M/V izumi conducting mothership operations in 03-19N 055-34E at 180936Z dec
  18. HYDROPAC 2816/10 · Piracy2010-12-17 → 2010-12-24
    M/V attacked in 03-05-12N 049-48-29E at 170342Z dec
  19. HYDROPAC 2770/10 · Piracy2010-12-13 → 2010-12-24
    Vessel attacked in 05-28S 039-58E at 132200Z dec
  20. HYDROPAC 2767/10 · Piracy2010-12-13 → 2010-12-27
    Pirate activity in 13-14.8S 054-43.0E on 13 dec

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