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. HYDROLANT 2184/10 · Other2010-11-17 → 2010-11-17
    HYDROLANT 2184/10(61)
  2. HYDROPAC 2480/10 · Piracy2010-11-17 → 2010-11-27
    M/V attacked in 06-34S 050-01E at 170510Z nov
  3. HYDROPAC 2478/10 · Nav aids2010-11-17 → 2010-12-26
    Nga chart 74021 (7TH ed)
  4. HYDROPAC 2471/10 · Piracy2010-11-16 → 2010-11-27
    M/V attacked in 04-01.7S 039-57.5E at 160637Z nov
  5. HYDROPAC 2470/10 · Piracy2010-11-16 → 2010-11-27
    Vessel attacked in 04-36S 039-57E at 160642Z nov
  6. HYDROPAC 2457/10 · Piracy2010-11-13 → 2010-11-27
    Pirate action group in 01-00S 052-06E at 130938Z nov
  7. HYDROPAC 2454/10 · Nav aids2010-11-13 → 2010-11-17
    Nga chart 74021 (7TH ed) 1. mooring buoys established in: a. 20-03.1S 113-36.1E
  8. HYDROPAC 2450/10 · Piracy2010-11-12 → 2010-11-27
    Possible mothership activity in 03-56S 041-45E at 121340Z nov
  9. HYDROPAC 2439/10 · Piracy2010-11-12 → 2010-11-27
    Piracy action group reported in 04-01S 041-12E at 120355Z nov
  10. HYDROPAC 2438/10 · Derelicts2010-11-12 → 2010-11-14
    Derelict 25 meter F/V adrift vicinity 13-32S 126-24E at 110404Z nov
  11. HYDROPAC 2437/10 · Piracy2010-11-11 → 2010-11-27
    M/V attacked in 00-50S 049-32E at 111215Z nov
  12. HYDROPAC 2401/10 · Piracy2010-11-09 → 2010-11-27
    M/V attacked in 01-05N 053-10E at 090547Z nov
  13. HYDROPAC 2397/10 · Derelicts2010-11-08 → 2010-11-11
    Derelict 15 meter vessel partially submerged and adrift in 13-28S 126-09E at 081220Z nov
  14. HYDROPAC 2396/10 · Piracy2010-11-08 → 2010-11-27
    M/V attacked in 06-43S 051-15E at 081345Z nov
  15. HYDROPAC 2393/10 · Piracy2010-11-08 → 2010-11-27
    Possible mothership activity in 03-40N 047-36E at 080653Z nov
  16. HYDROPAC 2390/10 · Piracy2010-11-07 → 2010-11-13
    Military warship has been fired upon while escorting a merchant vessel in 01-48S 042-31E
  17. HYDROPAC 2388/10 · Other2010-11-07 → 2010-11-10
    25 meter long wooden object reported adrift 10-13.6S 105-16.4E at 071204Z nov
  18. HYDROPAC 2387/10 · Piracy2010-11-07 → 2010-11-13
    Possible mothership activity in 00-43N 044-00E at 070905Z nov
  19. HYDROPAC 2383/10 · Piracy2010-11-06 → 2010-11-13
    M/V attacked in 01-40S 042-38E at 061812Z nov
  20. HYDROPAC 2375/10 · Piracy2010-11-05 → 2010-11-13
    M/V attacked in 05-09S 040-45E at 051316Z nov

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