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 813/10 · Piracy2010-04-20 → 2010-04-24
    M/V attacked in 00-50S 051-30E at 192101Z apr (approximately 350 miles northwest of port victoria, seychelles)
  2. HYDROPAC 812/10 · Piracy2010-04-20 → 2010-04-20
    Mothership activity in 01-40S 057-37E at 160800Z apr
  3. HYDROPAC 785/10 · Piracy2010-04-16 → 2010-05-01
    Mothership reported in 01-40S 057-37E at 160800Z apr
  4. HYDROPAC 744/10 · Nav aids2010-04-11 → 2010-04-13
    Nga chart 74520 (2ND ed)
  5. HYDROPAC 743/10 · Piracy2010-04-11 → 2010-05-01
    M/V hijacked in 04-45S 051-00E at 110741Z apr
  6. HYDROPAC 737/10 · Cable ops2010-04-10 → 2010-05-02
    Seismic survey 110001Z apr to 110001Z may by M/V mezen towing 8300 meter long cable in area bound by…
  7. HYDROPAC 706/10 · Missiles2010-04-07 → 2010-04-09
    Hazardous operations 1330Z to 1500Z daily 08 thru 11 apr: a. within 108 miles of 41-06S 050-54E
  8. HYDROPAC 705/10 · Piracy2010-04-07 → 2010-04-24
    M/V hijacked by pirates in 04-59S 043-52E at 071243Z apr
  9. HYDROPAC 685/10 · Piracy2010-04-04 → 2010-04-17
    M/V attacked in 09-20S 044-32E at 041406Z apr
  10. HYDROPAC 680/10 · Cable ops2010-04-04 → 2010-04-08
    Seismic survey 041200Z to 100001Z apr by M/V mezen towing 8300 meter long cable in area bound by 07-22.5S…
  11. HYDROPAC 671/10 · Piracy2010-04-02 → 2010-04-17
    M/V attacked in 11-06S 046-07E at 021100Z apr
  12. HYDROPAC 654/10 · Piracy2010-04-01 → 2010-04-02
    M/V attacked in 02-03N 052-26E
  13. HYDROPAC 653/10 · Piracy2010-04-01 → 2010-04-02
    M/V attacked in 02-15S 041-31E
  14. HYDROPAC 648/10 · Piracy2010-03-31 → 2010-04-17
    M/V attacked in 01-28N 065-10E at 311709Z mar
  15. HYDROPAC 646/10 · Piracy2010-03-31 → 2010-04-03
    M/V attacked in 05-03S 040-03E at 311259Z mar
  16. HYDROPAC 643/10 · Piracy2010-03-31 → 2010-04-03
    M/V attacked in 02-15S 041-31E at 310610Z mar
  17. HYDROPAC 642/10 · Piracy2010-03-31 → 2010-04-17
    M/V attacked in 02-03N 052-26E at 310521Z mar
  18. HYDROPAC 624/10 · Piracy2010-03-28 → 2010-04-03
    M/V attacked in 00-59S 057-19E at 280830Z mar
  19. HYDROPAC 618/10 · Piracy2010-03-27 → 2010-04-03
    Possible mothership activity in 03-03N 052-24E at 271021Z mar
  20. HYDROPAC 617/10 · Piracy2010-03-27 → 2010-04-03
    Possible mothership activity in 03-49S 052-12E at 271004Z mar

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