Indian Ocean

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

in force
23
last 12 months
22
since 1997
3,518
categories
15

In force now · 23

  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. AUSCOAST 255/26 · Surveys2026-07-27
    Vessel Fugro Kwilena is conducting underwater operations in an area bounded by 19-56.69 S to 20-26.06 S and 114-45.09 E to 115-30.10 E, requesting 1.5 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
    Semi-submerged mooring lightbuoy fl.w in 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
    Semi-submerged mooring lightbuoy fl.w in 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 · 3,495 cancelled

  1. HYDROPAC 1663/22 · Other2022-06-17 → 2023-04-05
    Navigation prohibited until further notice in area bound by 25-57.49S 046-59.01E, 25-57.49S 047-05.93E,…
  2. HYDROPAC 1628/22 · Surveys2022-06-13 → 2022-06-13
    Survey operations in progress until 19 jun in areas bound by: a. 24-56.47S 053-36.51E, 24-56.58S 053-29.97E,…
  3. HYDROPAC 1618/22 · Derelicts2022-06-12 → 2022-06-15
    Derelict 12 meter F/V, blue and white hull, adrift in vicinity 12-02.60S 123-09.20E at 120227Z jun
  4. HYDROPAC 1613/22 · Nav aids2022-06-11 → 2022-09-09
    North west cape light 21-48.40S 114-09.60E unlit
  5. HYDROPAC 1606/22 · Surveys2022-06-10 → 2022-06-18
    Survey operations 12 thru 17 jun by M/V marion dufresne in vicinity of trackline joining 31-34.03S…
  6. HYDROPAC 1552/22 · Exercises2022-06-03 → 2022-06-08
    Gunnery exercises 060500Z to 081500Z jun in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  7. HYDROPAC 1551/22 · Exercises2022-06-03 → 2022-06-07
    Hazardous operations 1230Z to 1530Z daily 06 and 07 jun in area bound by 18-24.17N 088-30.45E, 20-48.77N…
  8. HYDROPAC 1534/22 · Exercises2022-06-01 → 2022-06-03
    Gunnery exercises 031000Z to 031500Z jun in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…
  9. HYDROPAC 1513/22 · Derelicts2022-05-30 → 2022-06-02
    F/V sapna 08 disabled and adrift in vicinity 01-00.00N 087-00.00E on 30 may
  10. HYDROPAC 1464/22 · Derelicts2022-05-25 → 2022-05-27
    12 meter F/V imeshi duwa, white and blue hull, disabled and adrift in 02-15.00S 080-23.00E at 250530Z may
  11. HYDROPAC 1461/22 · Surveys2022-05-25 → 2022-05-25
    Survey operations by M/V offshore runner: a. 26 thru 28 may in area bound by 20-57.97S 072-43.98E, 21-05.64S…
  12. HYDROPAC 1436/22 · Exercises2022-05-23 → 2022-05-23
    Hazardous operations 261045Z to 271200Z may in area bound by 11-40.48S 092-45.54E, 11-45.01S 093-00.15E,…
  13. HYDROPAC 1422/22 · Nav aids2022-05-22 → 2022-06-07
    Six six meter buoys, yellow, fl w 3 sec, established in vicinity 19-57.67S 115-13.06E
  14. HYDROPAC 1398/22 · Surveys2022-05-20 → 2022-09-23
    Underwater operations in progress until further notice by M/V fugro maali in area bound by 19-14.00S…
  15. HYDROPAC 1393/22 · Missiles2022-05-20 → 2022-05-20
    Hazardous operations, space debris 201000Z to 201100Z may in area bound by 36-07.00S 100-41.00E, 39-44.00S…
  16. HYDROPAC 1392/22 · Missiles2022-05-20 → 2022-05-20
    Hazardous operations, space debris 201800Z to 201900Z may in area bound by 36-07.00S 100-41.00E, 39-44.00S…
  17. HYDROPAC 1381/22 · Surveys2022-05-19 → 2022-05-28
    Underwater operations in progress until further notice by M/V skandi singapore in 19-51.17S 114-30.94E
  18. HYDROPAC 1352/22 · Missiles2022-05-16 → 2022-05-20
    Hazardous operations, space debris 1010Z to 1345Z daily 18 thru 24 may in area bound by 29-43.00S…
  19. HYDROPAC 1337/22 · Missiles2022-05-14 → 2022-05-20
    Hazardous operations, space debris 192325Z to 200027Z may, alternate 202302Z to 210004Z, 232151Z to 232253Z,…
  20. HYDROPAC 1304/22 · Missiles2022-05-11 → 2022-05-16
    Hazardous operations, space debris 2000Z to 2355Z daily 14 thru 20 may in area bound by 29-43.00S…

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