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. HYDROPAC 99/24 · Missiles2024-01-09 → 2024-01-20
    Hazardous operations, space debris 0019Z to 0719Z daily 14 thru 20 jan in area bound by 08-53.00S…
  2. HYDROLANT 65/24 · Missiles2024-01-09 → 2024-01-20
    Hazardous operations, space debris 0019Z to 0719Z daily 14 thru 20 jan in area bound by 08-53.00S…
  3. HYDROPAC 79/24 · Cable ops2024-01-07 → 2024-01-31
    Pipeline operations in progress until further notice by M/V seven oceans along trackline joining 19-52.41S…
  4. HYDROPAC 74/24 · Surveys2024-01-06 → 2024-01-07
    Underwater operations in progress until further notice by M/V lay vessel 108 in 12-57.87S 124-26.55E
  5. HYDROPAC 60/24 · Surveys2024-01-05 → 2024-02-06
    Survey operations in progress until 05 feb in area bound by 16-24.00S 057-00.00E, 20-54.00S 057-00.00E,…
  6. HYDROPAC 49/24 · Piracy2024-01-04 → 2024-01-07
    Vessel boarded by six pirates in vicinity 06-47.00N 057-32.00E
  7. HYDROPAC 47/24 · Piracy2024-01-04 → 2024-01-04
    Vessel boarded by pirates in 05-54.00N 054-12.00E on 04 jan
  8. HYDROPAC 43/24 · Missiles2024-01-04 → 2024-01-05
    Hazardous operations, space debris 051000Z to 051600Z jan in area bound by 21-49.00S 087-30.00E, 21-41.00S…
  9. HYDROPAC 30/24 · Missiles2024-01-03 → 2024-01-08
    Hazardous operations, space debris 2258Z to 0327Z daily 07 thru 14 jan in area bound by 08-53.00S…
  10. HYDROLANT 12/24 · Missiles2024-01-03 → 2024-01-08
    Hazardous operations, space debris 2258Z to 0327Z daily 07 thru 14 jan in area bound by 08-53.00S…
  11. HYDROPAC 27/24 · Surveys2024-01-03 → 2024-01-18
    Underwater operations in progress until further notice by M/V deep orient in 21-12.28S 114-41.90E
  12. HYDROPAC 26/24 · Surveys2024-01-02 → 2024-01-05
    Underwater operations in progress until further notice by M/V fugro kwilena in area bound by 20-23.12S…
  13. HYDROPAC 4064/23 · Other2023-12-30 → 2024-01-02
    Fad with 200 meter rope adrift in 13-47.13S 123-11.41E at 300716Z dec
  14. HYDROPAC 4061/23 · Other2023-12-30 → 2023-12-30
    Earthquake with preliminary magnitude of 6.6 occurred in vicinity 02-30.00N 092-50.40E at 300519Z dec
  15. HYDROPAC 4045/23 · Surveys2023-12-29 → 2024-01-10
    Underwater operations in progress until further notice by M/V castorone along trackline joining 20-19.30S…
  16. HYDROPAC 4017/23 · Other2023-12-26 → 2024-01-12
    S/V solo sailor fuji, dismasted, requesting assistance in 38-52.40S 051-41.60E at 260652Z dec
  17. HYDROPAC 4013/23 · Surveys2023-12-25 → 2024-01-07
    Underwater operations in progress until further notice by M/V bhagwan dryden in area bound by 20-41.43S…
  18. HYDROPAC 4006/23 · Piracy2023-12-24 → 2023-12-27
    Two vessels hijacked in vicinity eyl (07-58.00N 049-51.00E) at 240130Z dec
  19. HYDROPAC 3995/23 · Surveys2023-12-23 → 2024-01-03
    Underwater operations in progress until further notice by M/V deep orient in 21-12.28S 114-41.90E
  20. HYDROPAC 3993/23 · Surveys2023-12-22 → 2024-01-08
    Underwater operations in progress until further notice by M/V seven oceanic in area bound by 19-44.31S…

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