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 480/11 · Derelicts2011-02-11 → 2011-02-14
    Derelict M/V esperanza adrift vicinity 03-23S 050-29E at 101146Z feb
  2. HYDROPAC 455/11 · Piracy2011-02-09 → 2011-02-19
    Pirate action group sighted in 11-22S 051-45E at 090945Z feb
  3. HYDROPAC 434/11 · Derelicts2011-02-07 → 2011-02-10
    F/V partially submerged and adrift in 21-09.6S 055-10.8E
  4. HYDROPAC 406/11 · Debris2011-02-03 → 2011-02-06
    5000 meter long wire rope with buoy adrift in 39-17.9S 034-50.7E
  5. HYDROPAC 404/11 · Piracy2011-02-03 → 2011-02-12
    Possible mothership activity in 01-42S 055-02E at 030739Z feb
  6. HYDROPAC 364/11 · Surveys2011-01-31 → 2011-08-27
    Underwater operations in progress until further notice by M/V sapura 3000 vicinity 20-01.5S 116-18.5E
  7. HYDROPAC 339/11 · Other2011-01-28 → 2011-01-31
    Bombing exercises 280300Z to 310300Z jan in areas: a. between 05-58.5N 04-11.0N and 084-20.0E 088-49.0E
  8. HYDROPAC 324/11 · Nav aids2011-01-27 → 2011-01-31
    Nga chart 74033 (1ST ed)
  9. HYDROPAC 303/11 · Piracy2011-01-26 → 2011-02-12
    M/V beluga nomination hijacked
  10. HYDROPAC 294/11 · Piracy2011-01-25 → 2011-01-29
    Possible pirated M/V in 02-20S 053-31E at 250445Z jan
  11. HYDROPAC 285/11 · Cable ops2011-01-24 → 2011-01-27
    Seismic survey in progress until further notice by M/V geo celtic towing 7800 meter long cable along…
  12. HYDROPAC 267/11 · Piracy2011-01-22 → 2011-01-25
    M/V attacked in 01-49N 056-35E at 221236Z jan
  13. HYDROPAC 242/11 · Cable ops2011-01-20 → 2011-01-24
    Seismic survey in progress until further notice by M/V geo celtic towing 7800 meter long cable along…
  14. HYDROPAC 229/11 · Nav aids2011-01-19 → 2011-04-23
    Nga chart 707 (2ND ed)
  15. HYDROPAC 216/11 · Piracy2011-01-19 → 2011-01-22
    M/V attacked in 03-10N 051-11E at 182303Z jan
  16. HYDROPAC 188/11 · Piracy2011-01-16 → 2011-01-29
    F/V shih fu no 1 conducting mothership operations in 06-40N 050-10E at 161815Z jan
  17. HYDROPAC 184/11 · Nav aids2011-01-16 → 2011-01-17
    Nga chart 74016 (3RD ed)
  18. HYDROPAC 174/11 · Piracy2011-01-15 → 2011-01-16
    F/V shih fu no 1 conducting mothership operations in 09-03N 053-27E at 151630Z jan
  19. HYDROPAC 156/11 · Piracy2011-01-14 → 2011-01-22
    Piracy action group reported in 06-37S 040-59E at 140650Z jan
  20. HYDROPAC 155/11 · Piracy2011-01-14 → 2011-01-14
    F/V shih fu no 1 conducting mothership operations in 13-03S 056-13E at 140600Z jan

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