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 3043/18 · Cable ops2018-08-19 → 2018-08-21
    Cable operations in progress until further notice by cableship ile de brehat along trackline between…
  2. HYDROPAC 2999/18 · Derelicts2018-08-16 → 2018-08-19
    Debris from vessel adrift in 23-56.00S 049-42.12E at 151300Z aug
  3. HYDROPAC 2998/18 · Missiles2018-08-16 → 2018-09-21
    Hazardous operations, rocket launching 2326Z to 0043Z commencing daily 21 aug thru 20 sep in area bound by…
  4. HYDROPAC 2994/18 · Derelicts2018-08-15 → 2018-08-18
    F/V sinaw adrift in 30-30S 041-26E
  5. HYDROPAC 2985/18 · Exercises2018-08-15 → 2018-08-20
    Gunnery exercises 200600Z to 201600Z aug in area bound by 21-39.02S 054-33.30E, 21-19.30S 054-25.54E,…
  6. HYDROPAC 2980/18 · Derelicts2018-08-14 → 2018-08-15
    F/V sinaw not under command and adrift in 30-08S 040-43E
  7. HYDROPAC 2965/18 · Nav aids2018-08-14 → 2018-08-14
    Perth dgps station 31-47.9S 115-56.0E inoperative
  8. HYDROPAC 2950/18 · Cable ops2018-08-13 → 2018-08-19
    Cable operations in progress until further notice by M/V ile de brehat along trackline between 14-03.0S…
  9. HYDROPAC 2945/18 · Nav aids2018-08-13 → 2018-08-13
    Perth dgps station 31-47.9S 115-56.0E inoperative
  10. HYDROPAC 2936/18 · Cable ops2018-08-12 → 2018-08-13
    Cable operations 13 aug until further notice by M/V ile de brehat/fouc along trackline between 14-03.0S…
  11. HYDROPAC 2808/18 · Surveys2018-08-02 → 2018-08-06
    Survey operations 04 and 05 aug by M/V marion dufresne in 024-12S 063-01E
  12. HYDROPAC 2716/18 · Surveys2018-07-25 → 2018-07-30
    Underwater operations in progress until further notice by M/V siem amethyst in 19-15.6S 114-29.9E
  13. HYDROPAC 2679/18 · Piracy2018-07-22 → 2018-07-29
    M/V attacked in 01-06.32N 044-02.00E at 221422Z jul
  14. HYDROPAC 2649/18 · Nav aids2018-07-21 → 2018-07-21
    Exmouth dgps station 21-53.1S 114-08.0E inoperative
  15. HYDROPAC 2587/18 · Derelicts2018-07-14 → 2018-07-17
    F/V hung jung 101 disabled and adrift in 38-33S 033-57E
  16. HYDROPAC 2555/18 · Derelicts2018-07-12 → 2018-07-14
    F/V hung jung 101 on fire and adrift in 37-47.09S 032-29.93E
  17. HYDROPAC 2543/18 · Derelicts2018-07-11 → 2018-07-14
    Indian ocean DNC 03
  18. HYDROPAC 2535/18 · Derelicts2018-07-11 → 2018-07-12
    F/V hung jung 101 on fire and adrift in 36-51S 031-47E
  19. HYDROPAC 2531/18 · Nav aids2018-07-11 → 2018-07-12
    Exmouth dgps station 21-53.1S 114-08.0E inoperative
  20. HYDROPAC 2520/18 · Nav aids2018-07-10 → 2018-07-10
    Karratha dgps station 20-42.4S 116-47.0E unreliable

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