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 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 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 562/20 · Surveys2020-02-16 → 2020-02-17
    Survey operations in progress until further notice by M/V sonne in area bound by 54-43.7S 079-50.7E,…
  2. HYDROPAC 522/20 · Surveys2020-02-13 → 2020-02-16
    Survey operations in progress until further notice by M/V sonne along trackline joining 56-49.9S 079-02.7E,…
  3. HYDROPAC 482/20 · Nav aids2020-02-11 → 2020-02-12
    RACON at angel platform 19-29.92S 116-35.88E inoperative
  4. HYDROPAC 467/20 · Surveys2020-02-10 → 2020-03-10
    Survey operations in progress until further notice by M/V amazon conqueror towing 4.5 mile long cable in…
  5. HYDROPAC 466/20 · Surveys2020-02-10 → 2020-03-07
    Underwater operations in progress by M/V fugro etive in area bound by 13-47S 123-07E, 14-00S 123-07E, 14-00S…
  6. HYDROPAC 443/20 · Nav aids2020-02-09 → 2020-02-11
    North island light 28-17.9S 113-35.4E unreliable
  7. HYDROPAC 439/20 · Surveys2020-02-09 → 2020-02-13
    Survey operations in progress until further notice by M/V sonne along trackline joining 58-27.3S…
  8. HYDROPAC 438/20 · Surveys2020-02-09 → 2020-02-10
    Underwater operations in progress by M/V fugro etive in area bound by 13-47S 123-07E, 14-00S 123-07E, 14-00S…
  9. HYDROPAC 436/20 · Surveys2020-02-09 → 2020-02-10
    Survey operations in progress until further notice by M/V amazon conqueror towing five mile long cables in…
  10. HYDROPAC 430/20 · Surveys2020-02-08 → 2020-02-10
    Underwater operations in progress by M/V fugro etive in area bound by 13-47S 123-07E, 14-00S 123-07E, 14-00S…
  11. HYDROPAC 424/20 · Nav aids2020-02-07 → 2020-03-03
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  12. HYDROPAC 421/20 · Derelicts2020-02-07 → 2020-02-10
    Derelict F/V partially submerged and adrift in vicinity 07-55.6S 056-57.1E at 060430Z feb
  13. HYDROPAC 416/20 · Surveys2020-02-07 → 2020-02-10
    Survey operations in progress until further notice by M/V sonne along trackline joining 56-05.9S 083-33.0E,…
  14. HYDROPAC 378/20 · Surveys2020-02-04 → 2020-02-07
    Survey operations in progress until further notice by M/V sonne along trackline joining 55-23.1S 083-19.9E,…
  15. HYDROPAC 368/20 · Nav aids2020-02-03 → 2020-02-05
    North island light 28-17.9S 113-35.4E unreliable
  16. HYDROPAC 358/20 · Nav aids2020-02-02 → 2020-02-03
    North island light 28-17.9S 113-35.4E unlit
  17. HYDROPAC 356/20 · Surveys2020-02-02 → 2020-02-04
    Survey operations in progress until further notice by M/V sonne along trackline joining 54-39.3S 083-31.8E,…
  18. HYDROPAC 321/20 · Debris2020-01-29 → 2020-02-01
    Object adrift in 20-52.40S 054-56.55E
  19. HYDROPAC 320/20 · Missiles2020-01-28 → 2020-01-30
    Hazardous operations, space debris 291544Z to 291657Z jan, alternate 301523Z to 301636Z jan in area bound by…
  20. HYDROPAC 311/20 · Missiles2020-01-28 → 2020-01-28
    Hazardous operations, space debris 291544Z to 291657Z jan in area bound by 29-43S 060-07E, 24-55S 064-27E,…

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