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 2/19 · Exercises2019-01-01 → 2019-01-06
    Hazardous operations 0730Z to 1130Z daily 04 thru 06 jan in areas bound by: a. 17-44.53N 083-29.87E,…
  2. HYDROPAC 4623/18 · Surveys2018-12-31 → 2019-01-27
    Underwater operations in progress until further notice by M/V skandi singapore in 21-23.21S 114-04.60E
  3. HYDROPAC 4620/18 · Exercises2018-12-30 → 2019-01-06
    Hazardous operations 0730Z to 1130Z daily 04 thru 06 jan 19 in area bound by 06-42.27S 088-43.91E, 10-41.44S…
  4. HYDROPAC 4527/18 · Derelicts2018-12-20 → 2018-12-23
    Derelict vessel, while hull, adrift in 19-53S 057-40E
  5. HYDROPAC 4435/18 · Missiles2018-12-13 → 2018-12-20
    Hazardous operations, space debris 1855Z to 2012Z daily 18 dec thru 17 jan 19 in area bound by 41-18S…
  6. HYDROPAC 4384/18 · Surveys2018-12-08 → 2018-12-09
    Underwater operations in progress until further notice by M/V jetwave maddison in area within two miles of…
  7. HYDROPAC 4323/18 · Missiles2018-12-05 → 2018-12-07
    Hazardous operations, space debris 051847Z to 051929Z dec, alternate 071759Z to 071841Z dec in area bound by…
  8. HYDROPAC 4268/18 · Exercises2018-11-30 → 2018-12-08
    Gunnery exercises 030001Z to 072359Z dec in area bound by 21-39.02S 054-33.30E, 21-19.30S 054-25.54E,…
  9. HYDROPAC 4267/18 · Missiles2018-11-30 → 2018-12-05
    Hazardous operations, space debris 041910Z to 041952Z dec, alternate 051847Z to 051929Z dec in area bound by…
  10. HYDROPAC 4220/18 · Missiles2018-11-26 → 2018-11-29
    India DNC 03
  11. HYDROPAC 4201/18 · Missiles2018-11-23 → 2018-12-01
    Hazardous opwerations, space debris 0400Z to 0800Z daily 29 nov thru 01 dec in area bound by 25-15S 074-45E,…
  12. HYDROPAC 4199/18 · Nav aids2018-11-23 → 2018-11-26
    Perth dgps station 31-47.9S 115-56.0E inoperative
  13. HYDROPAC 4175/18 · Derelicts2018-11-20 → 2018-11-23
    Derelict F/V SADEV1 adrift in 05-39N 081-43E at 191900Z nov
  14. HYDROPAC 4138/18 · Missiles2018-11-16 → 2018-12-07
    Hazardous operations, space debris 0351Z to 0508Z daily 21 nov thru 21 dec in area bound by 26-50S 087-30E,…
  15. HYDROPAC 4135/18 · Derelicts2018-11-16 → 2019-01-25
    M/V tenacity venture, not under command and adrift in vicinity 34-50.2S 020-52.1E
  16. HYDROPAC 4134/18 · Exercises2018-11-16 → 2018-11-20
    Gunnery exercises 190800Z to 201400Z nov in area bound by 21-39.02S 054-33.30E, 21-19.30S 054-25.54E,…
  17. HYDROPAC 4113/18 · Derelicts2018-11-14 → 2018-11-17
    F/V lakgini adrift in 04-00N 088-00E at 140300Z nov
  18. HYDROPAC 4100/18 · Derelicts2018-11-13 → 2018-11-16
    F/V jayawe 09 adrift in vicinity 04-36N 090-08E at 130300Z nov
  19. HYDROPAC 4081/18 · Cable ops2018-11-12 → 2018-12-07
    Cable operations in progress until further notice by cableship ile de re in vicinity of trackline joining…
  20. HYDROPAC 4069/18 · Exercises2018-11-11 → 2018-11-15
    Gunnery exercises 0600Z to 1300Z daily 14 and 15 nov in area bound by 21-12.00S 054-57.00E, 21-26.00S…

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