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. HYDROLANT 1091/23 · Missiles2023-05-18 → 2023-05-25
    Hazardous operations, space debris 0327Z to 1000Z daily 19 thru 25 may in area bound by 08-52.00S…
  2. HYDROPAC 1649/23 · Missiles2023-05-18 → 2023-05-25
    Hazardous operations, space debris 0327Z to 1000Z daily 19 thru 25 may in area bound by 08-52.00S…
  3. HYDROLANT 1089/23 · Missiles2023-05-17 → 2023-05-18
    Hazardous operations, space debris 0327 to 1000Z daily 19 thru 25 may in area bound by 08-52.00S 092-27.00E,…
  4. HYDROPAC 1646/23 · Missiles2023-05-17 → 2023-05-18
    Hazardous operations, space debris 0327 to 1000Z daily 19 thru 25 may in area bound by 08-52.00S 092-27.00E,…
  5. HYDROPAC 1625/23 · Nav aids2023-05-16 → 2023-07-17
    North west cape light 21-48.40S 114-09.60E unlit
  6. HYDROPAC 1617/23 · Surveys2023-05-16 → 2023-06-01
    Underwater operations in progress until further notice by M/V sapura constructor along trackline joining…
  7. HYDROPAC 1603/23 · Other2023-05-15 → 2023-05-18
    Large tree adrift in vicinity 12-39.40S 122-29.23E at 150756Z may
  8. HYDROPAC 1597/23 · Surveys2023-05-14 → 2023-05-16
    Underwater operations in progress until further notice by M/V x-press kohima in 05-52.7N 080-58.1E
  9. HYDROLANT 1012/23 · Missiles2023-05-09 → 2023-05-20
    Hazardous operations, space debris 0419Z to 1112Z daily 14 thru 20 may in area bound by 30-58.00S…
  10. HYDROPAC 1540/23 · Missiles2023-05-09 → 2023-05-20
    Hazardous operations, space debris 0419Z to 1112Z daily 14 thru 20 may in area bound by 30-58.00S…
  11. HYDROPAC 1520/23 · Surveys2023-05-08 → 2023-05-11
    Underwater operations in progress until further notice by M/V peter faber in area bound by 19-32.00S…
  12. HYDROPAC 1519/23 · Nav aids2023-05-08 → 2023-05-30
    Mary anne reef light 21-15.70S 115-27.80E unlit
  13. HYDROPAC 1518/23 · Derelicts2023-05-08 → 2023-05-09
    196 meter M/V papayiannis III disabled and adrift due to engine failure in vicinity 05-47.28N 081-22.70E at…
  14. HYDROLANT 946/23 · Missiles2023-05-02 → 2023-05-05
    Hazardous operations, space debris 0645Z to 1338Z daily 04 thru 10 may in area bound by 30-58.00S…
  15. HYDROPAC 1458/23 · Missiles2023-05-02 → 2023-05-05
    Hazardous operations, space debris 0645Z to 1338Z daily 04 thru 10 may in area bound by 30-58.00S…
  16. HYDROPAC 1445/23 · Surveys2023-05-01 → 2023-05-08
    Underwater operations in progress until further notice by M/V peter faber in area bound by 19-32.00S…
  17. HYDROPAC 1416/23 · Missiles2023-04-29 → 2023-05-10
    Hazardous operations, space debris 0645Z to 1338Z daily 04 thru 10 may in area bound by 30-58.00S…
  18. HYDROLANT 918/23 · Missiles2023-04-29 → 2023-05-10
    Hazardous operations, space debris 0645Z to 1338Z daily 04 thru 10 may in area bound by 30-58.00S…
  19. HYDROPAC 1412/23 · Surveys2023-04-29 → 2023-06-01
    Underwater operations in progress until further notice by M/V pride in 20-34.60S 114-46.60E
  20. HYDROPAC 1401/23 · Surveys2023-04-28 → 2023-05-01
    Underwater operations in progress until further notice by M/V peter faber in area bound by 19-32.00S…

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