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
    A semi-submerged mooring light buoy with a flashing white light is at 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
    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 1930/21 · Nav aids2021-07-01 → 2021-07-11
    Adele island light 15-30.6S 123-09.5E unlit
  2. HYDROPAC 1918/21 · Missiles2021-06-29 → 2021-06-30
    Hazardous operations, space debris 302114Z to 302221Z jun, alternate 2114Z to 2221Z daily 01 thru 05 jul in…
  3. HYDROPAC 1885/21 · Nav aids2021-06-26 → 2021-07-15
    North island light 28-17.9S 113-35.4E unlit
  4. HYDROPAC 1878/21 · Missiles2021-06-25 → 2021-06-29
    Hazardous operations, space debris 292114Z to 292221Z jun, alternate 302114Z to 302221Z jun in area bound by…
  5. HYDROPAC 1873/21 · Nav aids2021-06-25 → 2021-06-26
    North island light 28-17.9S 113-35.4E unreliable
  6. HYDROPAC 1864/21 · Derelicts2021-06-24 → 2021-06-26
    Derelict F/V de yi NO.6 on fire and adrift in vicinity 31-38.02S 035-37.68E
  7. HYDROPAC 1859/21 · Other2021-06-24 → 2021-06-24
    F/V de yi on fire and need assistance in 32-15-07S 034-41-16E
  8. HYDROPAC 1851/21 · Nav aids2021-06-23 → 2021-07-01
    RACON at adele island light 15-30.6S 123-09.5E inoperative
  9. HYDROPAC 1847/21 · Nav aids2021-06-23 → 2021-06-23
    Australia- Northwest Coast
  10. HYDROPAC 1834/21 · Cable ops2021-06-22 → 2021-07-07
    Cable operations in progress until further notice by cableship reliance in 29-23.6S 109-58.5E
  11. HYDROPAC 1831/21 · Nav aids2021-06-21 → 2021-06-25
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  12. HYDROPAC 1819/21 · Missiles2021-06-20 → 2021-06-25
    Hazardous operations, space debris 252114Z to 252221Z jun, alternate 262114Z to 262221Z, 272114Z to 272221Z,…
  13. HYDROPAC 1813/21 · Cable ops2021-06-18 → 2021-10-09
    Pipeline operations in progress until further notice by M/V deep orient in area bound by 19-49S 115-07E,…
  14. HYDROPAC 1811/21 · Cable ops2021-06-18 → 2021-06-18
    Pipeline operations in progress until further notice by M/V deep orient in 19-49.59S 115-07.14E
  15. HYDROPAC 1775/21 · Derelicts2021-06-16 → 2021-06-19
    Derelict six meter F/V, partially submerged and adrift in 12-15.57S 122-44.48E at 160323Z jun
  16. HYDROPAC 1774/21 · Cable ops2021-06-16 → 2021-07-07
    Pipeline operations in progress until further notice by M/V seven oceans along trackline joining 20-04.03S…
  17. HYDROPAC 1763/21 · Exercises2021-06-15 → 2021-06-17
    Gunnery exercises 170400Z to 170800Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  18. HYDROPAC 1753/21 · Exercises2021-06-14 → 2021-06-16
    Gunnery exercises 140600Z to 142000Z jun in area bound by 21-19.30S 054-25.54E, 21-12.00S 054-57.00E,…
  19. HYDROPAC 1752/21 · Exercises2021-06-14 → 2021-06-15
    Gunnery operations 150300Z to 152000Z jun in area bound by 21-19.30S 054-25.54E, 21-12.00S 054-57.00E,…
  20. HYDROLANT 1573/21 · Missiles2021-06-12 → 2021-06-17
    Hazardous operations, space debris 172253Z to 172315Z jun, alternate 182249Z to 182311Z, 192245Z to 192307Z,…

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