Indian Ocean

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

in force
23
last 12 months
23
since 1997
3,519
categories
15

In force now · 23

  1. AUSCOAST 279/26 · Surveys2026-08-19
    Special purpose vessel fugro kwilena / MLOV8 / 503147420 conducting underwater operations in an area bounded…
  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 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.
  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%
Surveys37811%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,496 cancelled

  1. HYDROPAC 1565/21 · Exercises2021-05-26 → 2021-05-27
    Gunnery exercise 271100Z to 271230Z may in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  2. HYDROPAC 1536/21 · Cable ops2021-05-24 → 2021-06-16
    Pipeline operations in progress until further notice by M/V seven oceans in vicinity of trackline between…
  3. HYDROPAC 1531/21 · Debris2021-05-23 → 2021-05-26
    Eight meter log adrift in vicinity 13-03.7S 121-44.0E at 230459Z may 21
  4. HYDROPAC 1530/21 · Debris2021-05-23 → 2021-05-23
    Eight meter log adrift in vicinity 13-03.7S 121-44.0E
  5. HYDROPAC 1529/21 · Nav aids2021-05-23 → 2021-09-16
    Cape leeuwin light 34-22.5S 115-08.2E unlit
  6. HYDROPAC 1520/21 · Missiles2021-05-22 → 2021-05-26
    Hazardous operations, space debris 262010Z to 262232Z may, alternate 271948Z to 272210Z, 281927Z to 282148Z,…
  7. HYDROPAC 1501/21 · Surveys2021-05-20 → 2021-07-07
    Underwater operations in progress until further notice by M/V skandi singapore in area bound by 19-24.91S…
  8. HYDROPAC 1487/21 · Exercises2021-05-19 → 2021-05-21
    Gunnery exercise 210400Z to 210800Z may in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.30E,…
  9. HYDROPAC 1462/21 · Derelicts2021-05-17 → 2021-05-20
    Derelict ten meter vessel, blue hull, adrift in vicinity 06-07.00S 078-00.13E at 170420Z may
  10. HYDROPAC 1445/21 · Missiles2021-05-16 → 2021-05-16
    Hazardous operations, space debris in progress until 160245Z may in area bound by 29-43S 060-07E, 24-55S…
  11. HYDROPAC 1435/21 · Derelicts2021-05-15 → 2021-05-17
    Derelict 40 meter F/V, white hull with red and green stripes, partially submerged and adrift in 31-20S…
  12. HYDROPAC 1430/21 · Derelicts2021-05-14 → 2021-05-17
    Derelict ten meter vessel, blue hull, adrift in vicinity 05-49S 077-48E at 140500Z may
  13. HYDROPAC 1386/21 · Missiles2021-05-10 → 2021-05-16
    Hazardous operations, space debris 160018Z to 160245Z may, alternate 162356Z to 170223Z, 172335Z to 180202Z,…
  14. HYDROPAC 1351/21 · Missiles2021-05-04 → 2021-05-09
    Hazardous operations, space debris 090753Z to 091006Z may, alternate 100732Z to 100954Z may in area bound by…
  15. HYDROPAC 1340/21 · Surveys2021-05-03 → 2021-05-06
    Survey operations in progress until 05 may by M/V antsiva along trackline joining 19-45.78S 054-07.53E,…
  16. HYDROPAC 1298/21 · Missiles2021-04-29 → 2021-05-04
    Hazardous operations, space debris 042040Z to 042237Z may, alternate 052040Z to 052215Z, 061928Z to 062240Z,…
  17. HYDROPAC 1280/21 · Missiles2021-04-27 → 2021-04-29
    Hazardous operations, space debris 290449Z to 290725Z apr, alternate 300427Z to 300703Z apr, 010406Z to…
  18. HYDROPAC 1248/21 · Surveys2021-04-25 → 2021-05-12
    Underwater operations in progress until further notice by M/V seven oceans in 20-08.8S 115-02.4E
  19. HYDROPAC 1233/21 · Surveys2021-04-23 → 2021-05-12
    Survey operations in progress until further notice by M/V offshore supplier in area bound by 31-45.4S…
  20. HYDROPAC 1231/21 · Missiles2021-04-23 → 2021-04-27
    Hazardous operations, space debris 280510Z to 280746Z apr, alternate 290449Z to 290725Z, 300427Z to 300703Z…

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