Indian Ocean

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

in force
22
last 12 months
22
since 1997
3,518
categories
15

In force now · 22

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  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 2157/26 · Surveys2026-07-27
    Underwater operations are underway by the vessel Fugro Kwilena in the eastern Indian Ocean off Australia until further notice. A two-mile berth is requested.
  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%
Missiles54215%
Nav aids46113%
Surveys37711%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,496 cancelled

  1. HYDROPAC 1737/21 · Missiles2021-06-12 → 2021-06-17
    Hazardous operations, space debris 172253Z to 172315Z jun, alternate 182249Z to 182311Z, 192245Z to 192307Z,…
  2. HYDROPAC 1731/21 · Exercises2021-06-11 → 2021-06-15
    Gunnery exercises 150300Z to 152000Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  3. HYDROPAC 1730/21 · Exercises2021-06-11 → 2021-06-14
    Gunnery exercises 140600Z to 142000Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  4. HYDROPAC 1712/21 · Derelicts2021-06-10 → 2021-06-13
    Derelict nine meter vessel adrift in 10-19.9S 104-34.3E at 101007Z jun
  5. HYDROPAC 1707/21 · Exercises2021-06-09 → 2021-06-11
    Gunnery exercises 110430Z to 110830Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  6. HYDROPAC 1706/21 · Exercises2021-06-09 → 2021-06-11
    Gunnery exercises 110430Z to 110830Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  7. HYDROPAC 1694/21 · Exercises2021-06-08 → 2021-06-10
    Gunnery exercises 100400Z to 100600Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  8. HYDROPAC 1688/21 · Derelicts2021-06-07 → 2021-06-10
    Derelict vessel wakashio maru 66 disabled and adrift in 40-04.7S 054-14.9E
  9. HYDROPAC 1686/21 · Exercises2021-06-07 → 2021-06-09
    Gunnery exercises 090800Z to 091400Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  10. HYDROPAC 1681/21 · Derelicts2021-06-06 → 2021-06-07
    Derelict vessel wakashio maru disabled and adrift in 41-02.1S 056-39.2E
  11. HYDROPAC 1671/21 · Derelicts2021-06-05 → 2021-06-06
    Derelict vessel wakashio maru disabled and adrift in 41-05S 055-50E
  12. HYDROPAC 1666/21 · Exercises2021-06-04 → 2021-06-08
    Gunnery exercise 081000Z to 082000Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  13. HYDROPAC 1633/21 · Exercises2021-06-02 → 2021-06-05
    Gunnery exercise 050430Z to 050830Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  14. HYDROPAC 1625/21 · Surveys2021-06-01 → 2021-07-29
    Survey operations in progress until further notice by M/V geo coral towing 12 five mile long cables in area…
  15. HYDROPAC 1617/21 · Exercises2021-05-31 → 2021-06-01
    Gunnery exercise 030600Z to 031400Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  16. HYDROPAC 1605/21 · Missiles2021-05-30 → 2021-06-03
    Hazardous operations, space debris 031809Z to 031843Z jun, alternate 041743Z to 041817 jun in area bound by…
  17. HYDROPAC 1604/21 · Surveys2021-05-29 → 2021-06-01
    Survey operations in progress until further notice by M/V geo coral towing five mile long cables in area…
  18. HYDROPAC 1585/21 · Derelicts2021-05-27 → 2021-05-30
    Derelict 41 foot F/V kumesh putha 01, yellow hull, submerged and adrift in 03-15N 085-50E at 270410Z may
  19. HYDROPAC 1569/21 · Exercises2021-05-26 → 2021-05-28
    Hazardous operations 271100Z to 271230Z and 280500Z to 280700Z may in area bound by 21-12.00S 054-57.00E,…
  20. HYDROPAC 1566/21 · Exercises2021-05-26 → 2021-05-26
    Gunnery exercise 280500Z to 280700Z may in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…

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