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 · 3,495 cancelled

  1. HYDROPAC 3021/21 · Derelicts2021-10-22 → 2021-10-25
    Derelict F/V jakob putha adrift in vicinity 02-13S 078-17E at 161115Z oct
  2. HYDROPAC 3019/21 · Exercises2021-10-22 → 2021-10-27
    Hazardous operations 1300Z to 1600Z daily 27 and 28 oct in areas bound by a. 20-48.37N 087-02.58E, 19-03.38N…
  3. HYDROPAC 2997/21 · Cable ops2021-10-19 → 2021-10-25
    Eastern indian ocean DNC 03
  4. HYDROPAC 2977/21 · Surveys2021-10-17 → 2021-12-09
    Underwater operations in progress until further notice by M/V warrego in area bound by 20-19.12S 115-35.62E,…
  5. HYDROPAC 2976/21 · Surveys2021-10-17 → 2021-11-08
    Underwater operations in progress until further notice by M/V deep orient in area bound by 19-46S 114-29E,…
  6. HYDROPAC 2954/21 · Surveys2021-10-16 → 2021-10-17
    Underwater operations in progress until further notice by M/V warrego in vicinity of trackline joining…
  7. HYDROPAC 2949/21 · Derelicts2021-10-16 → 2021-10-19
    Derelict vessel reported adrift in vicinity 05-19.0S 078-50.4E at 160546Z oct
  8. HYDROPAC 2948/21 · Nav aids2021-10-16 → 2021-12-23
    Cape leeuwin light 34-22.5S 115-08.2E range reduced temporarily to 20 miles
  9. HYDROPAC 2940/21 · Other2021-10-15 → 2021-10-18
    Fishing net, marked by buoys, adrift in vicinity 12-29.13S 123-42.60E at 150814Z oct
  10. HYDROPAC 2926/21 · Surveys2021-10-13 → 2021-10-14
    Survey operations in progress until further notice by M/V warrego in position 19-11.41S 118-59.06E
  11. HYDROPAC 2919/21 · Other2021-10-13 → 2021-10-15
    Fishing net in vicinity 12-41.49S 123-25.42E at 130313Z oct
  12. HYDROPAC 2915/21 · Exercises2021-10-12 → 2021-10-14
    Hazardous operations 1811Z to 1949Z daily 17 and 18 oct in area bound by 10-21N 062-11E, 09-10N 065-06E,…
  13. HYDROPAC 2914/21 · Surveys2021-10-12 → 2021-10-23
    Survey operations 15 thru 22 oct by M/V marion dufresne in areas bound by: a. 21-22.21S 055-12.08E,…
  14. HYDROPAC 2906/21 · Exercises2021-10-12 → 2021-10-12
    Hazardous operations 1644Z to 2120Z daily 17 and 18 oct in area bound by 10-21N 062-11E, 09-10N 065-06E,…
  15. HYDROPAC 2898/21 · Nav aids2021-10-11 → 2021-10-19
    Cape leveque light 16-23.8S 122-55.7E unreliable
  16. HYDROPAC 2893/21 · Surveys2021-10-10 → 2021-10-12
    Underwater operations in progress until further notice by M/V warrego in 19-00.48S 119-10.45E
  17. HYDROPAC 2892/21 · Surveys2021-10-10 → 2021-10-26
    Underwater operations in progress until further notice by M/V skandi hercules in area bound by 21-19S…
  18. HYDROPAC 2889/21 · Surveys2021-10-10 → 2021-11-22
    Survey operations in progress until further notice by M/V samson explorer in area bound by 19-10.00S…
  19. HYDROPAC 2888/21 · Surveys2021-10-09 → 2021-10-11
    Underwater operations in progress until further notice by M/V warrego in 19-58.32S 116-20.93E
  20. HYDROPAC 2882/21 · Surveys2021-10-09 → 2021-10-09
    Underwater operations in progress until further notice by M/V warrego in 19-58.32S 116-20.93E

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