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 1001/10 · Piracy2010-05-14 → 2010-05-29
    Piracy possible mothership activity in 06-18S 042-12E at 141000Z may
  2. HYDROPAC 988/10 · Piracy2010-05-12 → 2010-05-22
    M/V attacked in 09-58S 042-15E at 121507Z may
  3. HYDROPAC 979/10 · Derelicts2010-05-12 → 2010-05-15
    Derelict vessel on fire and adrift in 14-50S 121-21E at 111040Z may
  4. HYDROPAC 974/10 · Piracy2010-05-11 → 2010-05-11
    Possible mothership activity in 00-24S 054-23EE at 111040Z may
  5. HYDROPAC 965/10 · Piracy2010-05-10 → 2010-05-22
    Possible mothership activity in 01-19N 045-39E at 100930Z may
  6. HYDROPAC 964/10 · Piracy2010-05-10 → 2010-05-22
    M/V attacked in 00-06N 064-57E at 100538Z may
  7. HYDROPAC 963/10 · Piracy2010-05-10 → 2010-05-10
    M/V attacked in 00-06N 064-57E at 100538Z may
  8. HYDROPAC 948/10 · Piracy2010-05-07 → 2010-05-15
    F/V hijacked in 01-05N 067-50E on 06 may
  9. HYDROPAC 937/10 · Piracy2010-05-06 → 2010-05-15
    Possible mothership activity in 03-15S 042-03E at 060855Z may
  10. HYDROPAC 935/10 · Piracy2010-05-06 → 2010-05-15
    Possible mothership activity in 09-36N 051-32E at 060757Z may
  11. HYDROPAC 934/10 · Piracy2010-05-06 → 2010-05-07
    Possible mothership activity in 02-09N 052-51E at 060711Z may
  12. HYDROPAC 933/10 · Other2010-05-06 → 2010-05-10
    Exmouth dpgs station 21-53.1S 114-08.0E inoperative
  13. HYDROPAC 924/10 · Piracy2010-05-05 → 2010-05-05
    Possible mothership activity in 01-59N 051-45E at 050912Z may
  14. HYDROPAC 922/10 · Piracy2010-05-05 → 2010-05-15
    M/V attacked in 09-43S 041-15E at 050520Z may
  15. HYDROPAC 910/10 · Cable ops2010-05-02 → 2010-05-16
    Seismic survey in progress until 180001Z may by M/V mezen towing 8300 meter long cable in area bound by…
  16. HYDROPAC 880/10 · Piracy2010-04-26 → 2010-05-01
    Three pirated fishing vessels sighted in 08-20N 053-58E at 232300Z apr
  17. HYDROPAC 843/10 · Piracy2010-04-23 → 2010-04-24
    M/V attacked in 01-10N 065-00E at 211111Z apr
  18. HYDROPAC 837/10 · Piracy2010-04-22 → 2010-05-01
    Possible mothership activity in 06-00S 045-00E on 22 apr
  19. HYDROPAC 823/10 · Piracy2010-04-21 → 2010-05-01
    M/V attacked in 01-10N 065-00E at 211111Z apr
  20. HYDROPAC 822/10 · Piracy2010-04-21 → 2010-05-01
    Mothership reported in 00-30S 053-04E at 210757Z apr

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