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 2320/09 · Derelicts2009-12-10 → 2009-12-13
    Derelict 40 meter vessel on fire and adrift in 10-15.5S 105-15.8E at 101304Z dec
  2. HYDROPAC 2296/09 · Piracy2009-12-07 → 2009-12-12
    M/V attacked in 00-27N 061-39E at 071347Z dec (approximately 480 miles northeast of port victoria, seychelles)
  3. HYDROPAC 2284/09 · Piracy2009-12-05 → 2009-12-19
    Pirate mother ship vicinity 03-06S 051-17E
  4. HYDROPAC 2240/09 · Piracy2009-11-30 → 2009-12-05
    M/V reported coming under fire and being hijacked in 03-09N 061-30E at 291213Z nov (approximately 580 miles…
  5. HYDROPAC 2231/09 · Piracy2009-11-29 → 2009-12-12
    F/V attacked in 04-44S 052-30E at 290500Z nov
  6. HYDROPAC 2222/09 · Piracy2009-11-28 → 2009-12-05
    Increased piracy activity is expected for the next 24-48 hours vicinity 00-29N 063-12E (approximately 1240…
  7. HYDROPAC 2220/09 · Derelicts2009-11-27 → 2009-11-30
    Derelict 22 meter F/V, yellow hull, adrift in 12-58S 120-37E at 261006Z nov
  8. HYDROPAC 2207/09 · Piracy2009-11-26 → 2009-12-05
    M/V attacked in 05-54S 043-44E at 260657Z nov
  9. HYDROPAC 2188/09 · Piracy2009-11-24 → 2009-11-28
    A merchant vessel reported coming under fire in 00-29N 063-12E at 241307Z nov (approximately 554 miles…
  10. HYDROPAC 2176/09 · Surveys2009-11-23 → 2009-12-05
    Underwater operations in progress until further notice in 12-40.3S 124-32.4E
  11. HYDROPAC 2172/09 · Nav aids2009-11-23 → 2009-11-28
    Nga chart 74033 (1ST ed)
  12. HYDROPAC 2157/09 · Piracy2009-11-20 → 2009-11-28
    A merchant vessel reported coming under fire in 01-08S 062-28E (approximately 470 miles northeast of port…
  13. HYDROPAC 2132/09 · Piracy2009-11-18 → 2009-12-12
    On 180730Z nov a merchant vessel came under attack by pirates in two fast moving craft in 02-09S 047-25E
  14. HYDROPAC 2131/09 · Piracy2009-11-18 → 2009-11-28
    A merchant vessel reported coming under fire in 01-48S 049-01E (approximately 275 miles south of mogadishu)…
  15. HYDROPAC 2126/09 · Piracy2009-11-18 → 2009-11-28
    Observations of potential mothership activity associated with somali pirates were noted vicinity 00-07N…
  16. HYDROPAC 2096/09 · Debris2009-11-13 → 2009-11-16
    Ten meter long object adrift in 31-08.95S 035-01.70E
  17. HYDROPAC 2095/09 · Other2009-11-13 → 2009-11-21
    Observations of potential mothership activity were noted in the area surrounding hobyo, somalia (05-20N…
  18. HYDROPAC 2091/09 · Piracy2009-11-13 → 2009-12-05
    A merchant vessel reported being attacked by pirates in 00-42S 047-58E at 130446Z nov, approximately 230…
  19. HYDROPAC 2085/09 · Debris2009-11-12 → 2009-11-13
    Eight meter long object adrift in 29-53S 043-05E
  20. HYDROPAC 2082/09 · Cable ops2009-11-12 → 2009-11-15
    Seismic survey in progress until further notice by M/V geo atlantic towing six mile long cable along…

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