Indian Ocean

IHO sea area 45 · 20° to 147° E, -60° to 10° N

in force
22
last 12 months
26
since 1997
3,522
categories
15

In force now · 22

  1. 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.
  2. 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.
  3. NAVAREA X 94/26 · Missiles2026-08-15
    Space debris danger area is in effect from Cape Darnely to Tasmania, daily 1525-2235 UTC, 20-26 August 2026.
  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. NAVAREA X 91/26 · Missiles2026-08-05
    Space debris danger area from Cape Darnley to Tasmania, 80 nautical miles either side of centreline, daily between 1455 and 2205 UTC, 10 to 16 August 2026.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  18. 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.
  19. 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.
  20. 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.
  21. 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.
  22. 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
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Derelicts62118%
Missiles54315%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 501/19 · Derelicts2019-02-13 → 2019-02-16
    Derelict M/V slfv sasmi DU1 adrift in vicinity 02-12N 077-55E at 130300Z feb
  2. HYDROPAC 460/19 · Nav aids2019-02-09 → 2019-03-22
    Cape naturaliste light 33-32.2S 115-01.2E temporary change of character fl 10S, range reduced to 21 nm
  3. HYDROPAC 455/19 · Icebergs2019-02-08 → 2019-02-11
    Iceberg reported in 46-49.34S 047-21.58E
  4. HYDROPAC 454/19 · Icebergs2019-02-08 → 2019-02-11
    Iceberg reported in 46-58.58S 047-28.02E
  5. HYDROPAC 414/19 · Nav aids2019-02-04 → 2019-02-12
    Cape naturaliste light 33-32.2S 115-01.2E unreliable
  6. HYDROPAC 338/19 · Nav aids2019-01-29 → 2019-01-29
    Exmouth dgps station 21-53.1S 114-08.0E inoperative
  7. HYDROPAC 319/19 · Nav aids2019-01-28 → 2019-01-28
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  8. HYDROPAC 281/19 · Exercises2019-01-25 → 2019-01-29
    Gunnery exercises 281600Z to 281800Z and 290100Z to 290600Z jan in area bound by 21-12.00S 054-57.00E,…
  9. HYDROPAC 271/19 · Exercises2019-01-24 → 2019-01-25
    Gunnery exercises 290100Z to 290600Z jan in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  10. HYDROPAC 270/19 · Exercises2019-01-24 → 2019-01-25
    Gunnery exercises 281600Z to 281800Z jan in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  11. HYDROPAC 243/19 · Nav aids2019-01-23 → 2019-01-27
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  12. HYDROPAC 242/19 · Nav aids2019-01-23 → 2019-03-22
    Exmouth dgps station 21-53.1S 114-08.0E inoperative
  13. HYDROPAC 214/19 · Derelicts2019-01-20 → 2019-01-23
    Derelict 50 meter vessel, red and green hull, partially submerged and adrift in 21-36.74S 056-19.69E at…
  14. HYDROPAC 211/19 · Cable ops2019-01-19 → 2019-03-22
    Cable operations in progress until further notice by cableship ile de brehat in vicinity of 10-25S 105-40E
  15. HYDROPAC 181/19 · Debris2019-01-18 → 2019-01-21
    Fishing net adrift in 14-53.23S 117-53.7E at 180532Z jan
  16. HYDROPAC 176/19 · Missiles2019-01-17 → 2019-01-25
    Hazardous operations, rocket launching 1730Z to 2130Z daily 24 thru 26 jan in areas: a. within ten miles of…
  17. HYDROPAC 166/19 · Derelicts2019-01-16 → 2019-01-19
    Derelict 50 meter vessel, red and green hull, adrift in 21-26S 055-17E
  18. HYDROPAC 145/19 · Surveys2019-01-14 → 2019-02-14
    Survey operations in progress until 13 feb by M/V hakuho maru towing 1500 meter long cable in areas: a.…
  19. HYDROPAC 139/19 · Derelicts2019-01-14 → 2019-01-17
    Derelict vessel, brown and blue hull, partially submerged and adrift in 27-58.92S 059-06.64E
  20. HYDROPAC 43/19 · Surveys2019-01-04 → 2019-02-15
    Survey operations 07 jan thru 14 feb by M/V marion dufresne in area bound by 20-10S 050-10E, 50-50S 050-10E,…

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