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 2062/09 · Piracy2009-11-10 → 2009-11-28
    A merchant vessel reported coming under fire in 00-43.0S 061-57.8E at 100200Z nov, approximately 461 miles…
  2. HYDROPAC 2055/09 · Piracy2009-11-09 → 2009-11-14
    A merchant vessel was reportedly attacked in 11-09S 061-35E at 090914Z nov, approximately 400 miles…
  3. HYDROPAC 2023/09 · Piracy2009-11-05 → 2009-11-14
    A merchant vessel was reportedly attacked in 09-40S 045-05E at 050456Z nov, approximately 730 miles…
  4. HYDROPAC 2018/09 · Exercises2009-11-04 → 2009-11-05
    Gunnery exercises 050600Z to 051400Z nov in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  5. HYDROPAC 2006/09 · Piracy2009-11-03 → 2009-11-14
    Suspected aggressive small boat activity has been noted in 01-57S 044-27E and 02-05S 044-29E at 030850Z nov
  6. HYDROPAC 2000/09 · Piracy2009-11-02 → 2009-11-07
    A merchant vessel has reported coming under attack in 03-44.1S 045-41.3E, approximately 320 miles east of…
  7. HYDROPAC 1971/09 · Piracy2009-10-29 → 2009-11-14
    A fishing vessel was reportedly hijacked in 01-55S 055-53E, approximately 183 miles northeast of seychelles…
  8. HYDROPAC 1940/09 · Exercises2009-10-26 → 2009-10-27
    Gunnery exercises 270600Z to 271400Z oct in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  9. HYDROPAC 1933/09 · Derelicts2009-10-24 → 2009-10-27
    Derelict 15 meter vessel on fire and adrift in 10-23S 105-25E at 222215Z oct
  10. HYDROPAC 1915/09 · Piracy2009-10-22 → 2009-10-24
    Merchant vessel reports coming under attack in 03-45.28S 046-43.24E at 220415Z oct and merchant vessel…
  11. HYDROPAC 1871/09 · Piracy2009-10-15 → 2009-10-17
    Merchant vessel reported hijacked in 01-33S 054-52E at 150237Z oct, approximately 180 miles north northwest…
  12. HYDROPAC 1857/09 · Exercises2009-10-13 → 2009-10-16
    Gunnery exercises 0400Z to 1300Z daily 14 thru 16 oct in area bound by 21-12.0S 054-57.0E, 21-26.0S…
  13. HYDROPAC 1826/09 · Exercises2009-10-08 → 2009-10-08
    Gunnery exercises 080400Z to 081100Z oct in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  14. HYDROPAC 1814/09 · Piracy2009-10-06 → 2009-10-24
    Piracy attack reported in 01-47.2S 056-07.1E at 041900Z oct
  15. HYDROLANT 1915/09 · Exercises2009-10-04 → 2009-10-05
    Gunnery exercises 050900Z to 051200Z oct in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  16. HYDROPAC 1774/09 · Other2009-10-02 → 2009-10-10
    F/V reports coming under attack in 02-34-36.5S 048-24-36.0E at 020345Z oct
  17. HYDROPAC 1764/09 · Cable ops2009-09-30 → 2009-10-16
    Seismic survey in progress until further notice by M/V geo mariner towing five mile cable in area bound by…
  18. HYDROPAC 1700/09 · Exercises2009-09-20 → 2009-09-25
    Gunnery exercises 0600Z to 1730Z daily 21, 22, 24 and 25 sep in area bound by 21-12.0S 054-57.0E, 21-26.0S…
  19. HYDROPAC 1688/09 · Cable ops2009-09-19 → 2009-09-27
    Cable repair operations in progress until 26 sep by cableship chamarel vicinity of trackline joining…
  20. HYDROPAC 1679/09 · Nav aids2009-09-17 → 2009-09-19
    Rottnest island light 32-00.5S 115-30.1E unlit

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