Indian Ocean

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

in force
23
last 12 months
27
since 1997
3,523
categories
15

In force now · 23

  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. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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%
Missiles54415%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 1678/17 · Nav aids2017-05-12 → 2017-05-15
    Rottnest island light 32-00.4S 115-30.3E unlit
  2. HYDROPAC 1653/17 · Debris2017-05-10 → 2017-05-13
    50 meter long black and blue object adrift in 20-36S 055-29E
  3. HYDROPAC 1608/17 · Derelicts2017-05-06 → 2017-05-09
    Derelict 30 foot S/V adrift in 23-03.27S 113-25.60E at 060130Z may
  4. HYDROPAC 1555/17 · Other2017-05-02 → 2017-05-02
    F/V seron 08, red and blue hull, reports crewman requiring medical assistance in 02-58S 078-11E at 020330Z may
  5. HYDROPAC 1527/17 · Exercises2017-04-30 → 2017-05-02
    Hazardous operations 011438Z to 011715Z may, alternate 021438Z to 021715Z may in area bound by 30-31S…
  6. HYDROPAC 1505/17 · Derelicts2017-04-28 → 2017-05-01
    Derelict F/V eshan putha adrift in 00-04N 077-07E at 280615Z apr
  7. HYDROPAC 1488/17 · Other2017-04-28 → 2018-09-07
    Fishing gear abandoned in vicinity 14-51.7S 122-01.4E at 280317Z apr
  8. HYDROPAC 1479/17 · Exercises2017-04-27 → 2017-05-01
    Hazardous operations 301055Z to 301354Z apr, alternate 011055Z to 011354Z may in area bound by 30-31S…
  9. HYDROPAC 1447/17 · Exercises2017-04-25 → 2017-04-30
    Hazardous operations 301438Z to 301715Z apr, alternate 011438Z to 011715Z may in area bound by 30-31S…
  10. HYDROPAC 1439/17 · Derelicts2017-04-24 → 2017-04-27
    Derelict lifeboat adrift in vicinity 21-50.2S 055-44.9E on 22 apr
  11. HYDROPAC 1422/17 · Piracy2017-04-22 → 2017-04-29
    M/V attacked in 05-39N 048-57E at 221610Z apr
  12. HYDROPAC 1403/17 · Exercises2017-04-21 → 2017-04-28
    Hazardous operations 0300Z to 0700Z daily 27 and 28 apr in area bound by 20-48.34N 087-02.60E, 18-12.34N…
  13. HYDROPAC 1363/17 · Exercises2017-04-18 → 2017-04-25
    Gunnery exercises 241230Z to 241400Z, 241630Z to 241800Z and 250400Z to 250800Z apr in area bound by…
  14. HYDROPAC 1317/17 · Missiles2017-04-14 → 2017-04-18
    Hazardous operations space debris 181605Z to 181723Z apr, alternate 191543Z to 191701Z apr in area within…
  15. HYDROPAC 1302/17 · Exercises2017-04-14 → 2017-04-21
    Gunnery exercises 190400Z to 190600Z apr, 0800Z to 1200Z daily 19 and 20 apr, 211000Z to 211500Z apr in area…
  16. HYDROPAC 1301/17 · Exercises2017-04-14 → 2017-04-14
    Gunnery exercises 0800Z to 1200Z daily 19 and 20 apr in area bound by 21-12.00S 054-57.00E, 21-19.30S…
  17. HYDROPAC 1293/17 · Missiles2017-04-13 → 2017-04-14
    Hazardous operations, rocket re-entry 181605Z to 191701Z apr, alternate 191543Z to 191701Z apr in area bound…
  18. HYDROPAC 1266/17 · Nav aids2017-04-10 → 2017-04-11
    Exmouth dgps station 21-53.1S 114-08.0E inoperative
  19. HYDROPAC 1257/17 · Surveys2017-04-09 → 2017-07-04
    Survey operations in progress until further notice by M/V fugro equator towing 900 meter long cable: a.…
  20. HYDROPAC 1230/17 · Debris2017-04-06 → 2017-04-09
    200 meter long fishing gear adrift in vicinity 13-35S 123-18E at 060503Z apr

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