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 4023/15 · Exercises2015-12-10 → 2015-12-12
    Gunnery exercises 121500Z to 121800Z dec in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  2. HYDROPAC 4002/15 · Exercises2015-12-07 → 2015-12-09
    Gunnery exercises 090330Z to 090530Z dec in area bound by 21-12.00S 053-57.00E, 21-39.02S 054-33.30E,…
  3. HYDROPAC 3984/15 · Missiles2015-12-05 → 2015-12-08
    Hazardous operations 062245Z to 070003Z dec, alternate 072219Z to 072337Z dec in area bound by 51-17S…
  4. HYDROPAC 3982/15 · Missiles2015-12-05 → 2015-12-07
    Hazardous operations 052307Z to 060025Z dec, alternate 062245Z to 070003Z dec in area bound by 51-17S…
  5. HYDROPAC 3977/15 · Exercises2015-12-04 → 2015-12-06
    Gunnery exercises 050300Z to 050800Z and 060130Z to 060630Z dec in area bound by 21-12.00S 054-57.00E,…
  6. HYDROPAC 3973/15 · Missiles2015-12-04 → 2015-12-06
    Hazardous operations 042330Z to 050048Z dec, alternate 052307Z to 060025Z dec in area bound by 51-17S…
  7. HYDROPAC 3965/15 · Cable ops2015-12-03 → 2016-01-27
    Seismic survey 04 dec until further notice by M/V bgp pioneer in area bound by 01-39.46S 041-46.85E,…
  8. HYDROPAC 3941/15 · Exercises2015-12-01 → 2015-12-04
    Gunnery exercises 041000Z to 041400Z dec in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  9. HYDROPAC 3918/15 · Missiles2015-11-29 → 2015-12-04
    Hazardous operations 032352Z to 040110Z dec, alternate 042330Z to 050048Z dec 51-17S 120-49E, 47-38S…
  10. HYDROPAC 3916/15 · Missiles2015-11-29 → 2015-12-03
    Hazardous operations 0319Z to 0620Z daily 02 thru 27 dec in area bound by 00-55S 056-26E, 02-58S 076-23E,…
  11. HYDROPAC 3901/15 · Surveys2015-11-27 → 2015-11-28
    Underwater operations in progress until further notice by M/V far sirius in 19-40.78S 117-21.08E
  12. HYDROPAC 3889/15 · Cable ops2015-11-26 → 2016-01-01
    Pipeline operations in progress until further notice vicinity 20-29.18S 114-53.88E
  13. HYDROPAC 3888/15 · Cable ops2015-11-26 → 2016-01-05
    Pipeline operations in progress until further notice vicinity 20-31.22S 114-49.36E
  14. HYDROPAC 3880/15 · Other2015-11-25 → 2015-11-28
    Four meter submersible partially submerged and adrift in 19-28.7S 115-17.65E at 251040Z nov
  15. HYDROPAC 3873/15 · Other2015-11-25 → 2015-11-28
    23 meter tree trunk adrift vicinity 20-27.5S 056-34.5E
  16. HYDROPAC 3860/15 · Exercises2015-11-24 → 2015-11-26
    Gunnery exercises 260400Z to 261400Z nov in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  17. HYDROPAC 3837/15 · Piracy2015-11-22 → 2015-11-28
    F/V attacked vicinity 06-16N 053-50E at 221105Z nov 15
  18. HYDROPAC 3784/15 · Icebergs2015-11-18 → 2015-11-21
    Iceberg reported in 52-22S 064-54E at 180620Z nov
  19. HYDROPAC 3775/15 · Exercises2015-11-18 → 2015-11-19
    Gunnery exercises 0300Z to 1100Z daily 18 and 19 nov in area bound by 21-12.00S 054-57.00E, 21-19.30S…
  20. HYDROPAC 3760/15 · Derelicts2015-11-16 → 2015-11-19
    Derelict F/V SAGARAPUTHA-03 adrift vicinity 01-42N 082-39E on 15 nov

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