Indian Ocean

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

in force
21
last 12 months
28
since 1997
3,524
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
26

By month (all years)

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

By category · since 1997

Derelicts62118%
Missiles54515%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,503 cancelled

  1. HYDROPAC 2849/12 · Derelicts2012-10-11 → 2012-10-14
    Derelict F/V, blue hull, adrift vicinity 03-57.6S 091-05.3E at 110700Z oct
  2. HYDROPAC 2843/12 · Piracy2012-10-10 → 2012-10-20
    M/V attacked vicinity 00-26N 050-39E at 101210Z oct
  3. HYDROPAC 2825/12 · Surveys2012-10-09 → 2012-11-24
    Underwater operations in progress until further notice: a. in area between 31-55S 32-13S and 115-20E 115-33E
  4. HYDROPAC 2768/12 · Cable ops2012-10-01 → 2012-11-16
    Seismic survey in progress until 15 nov by M/V pacific explorer in area bound by 04-19S 039-39E, 04-24S…
  5. HYDROPAC 2711/12 · Derelicts2012-09-25 → 2012-09-26
    F/V, disabled and adrift in 10-57S 095-40E at 250345Z sep
  6. HYDROPAC 2667/12 · Exercises2012-09-19 → 2012-09-22
    Gunnery exercises 210230Z to 220700Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  7. HYDROPAC 2651/12 · Missiles2012-09-17 → 2012-09-19
    Hazardous operations 190230Z to 190630Z sep in area bound by 20-48.33N 087-02.58E, 18-12.33N 086-07.11E,…
  8. HYDROPAC 2648/12 · Nav aids2012-09-17 → 2012-09-21
    Australia-west Coast
  9. HYDROPAC 2642/12 · Missiles2012-09-16 → 2012-09-22
    Hazardous operations 210230Z to 210500Z, 210700Z to 210900Z and 220500Z to 220830Z sep in area bound by…
  10. HYDROPAC 2620/12 · Derelicts2012-09-14 → 2012-09-17
    Derelict F/V, partially submerged and adrift in 17-00.9S 108-37.7E at 141616Z sep
  11. HYDROPAC 2611/12 · Exercises2012-09-13 → 2012-09-17
    Hazardous operations
  12. HYDROPAC 2607/12 · Derelicts2012-09-12 → 2012-09-15
    Derelict five meter vessel, orange hull, partially submerged and adrift in 19-34.5S 116-28.5E at 092200Z sep
  13. HYDROPAC 2596/12 · Derelicts2012-09-11 → 2012-09-14
    Derelict F/V adrift vicinity 09-29S 093-20E at 100936Z sep
  14. HYDROPAC 2586/12 · Exercises2012-09-10 → 2012-09-12
    Gunnery exercises 120600Z to 121000Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  15. HYDROPAC 2536/12 · Derelicts2012-09-05 → 2012-09-07
    Derelict ten meter F/V adrift vicinity 10-53S 095-24E at 050500Z sep
  16. HYDROPAC 2521/12 · Exercises2012-09-03 → 2012-09-05
    Gunnery exercises 050500Z to 051400Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  17. HYDROPAC 2516/12 · Nav aids2012-09-02 → 2012-09-03
    Australia-northwest Coast
  18. HYDROPAC 2490/12 · Derelicts2012-08-30 → 2012-09-02
    Lifeboat partially submerged and adrift in 27-20.8S 040-46.8E on 28 aug
  19. HYDROPAC 2462/12 · Nav aids2012-08-28 → 2012-08-29
    Australia-west Coast
  20. HYDROPAC 2436/12 · Nav aids2012-08-25 → 2012-08-26
    Australia-northwest Coast

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