Indian Ocean

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

in force
21
last 12 months
56
since 1997
3,589
categories
15

In force now · 21

  1. NAVAREA X 96/26 · Missiles2026-08-20
    Space debris danger area 100 nautical miles either side of a line in the Southern Ocean from Cape Darnley to Tasmania, daily 25-31 August 2026 0809-1608 UTC.
  2. 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.
  3. 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.
  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. 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 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.
  16. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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
25
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Derelicts62217%
Missiles56016%
Nav aids46713%
Surveys41211%
Other37610%
Exercises35710%
Piracy34110%
Cable ops1955%
Debris1093%
Icebergs822%
Wrecks371%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,568 cancelled

  1. HYDROPAC 2988/10 · Piracy2010-12-30 → 2010-12-31
    M/V york conducting mothership operations in 01-13N 064-23E at 302039Z dec
  2. HYDROPAC 2986/10 · Piracy2010-12-30 → 2010-12-30
    M/V york conducting mothership operations in 00-38N 063-59E at 300939Z dec
  3. HYDROPAC 2985/10 · Piracy2010-12-30 → 2010-12-31
    M/V polar conducting mothership operations in 00-50N 050-09E at 301050Z dec
  4. HYDROPAC 2979/10 · Piracy2010-12-30 → 2010-12-30
    M/V polar conducting mothership operations in 00-13S 050-30E at 300448Z dec
  5. HYDROPAC 2978/10 · Piracy2010-12-30 → 2010-12-30
    M/V york conducting mothership operations in 00-07N 062-09E at 300539Z dec
  6. HYDROPAC 2977/10 · Piracy2010-12-30 → 2011-01-14
    F/V shih fu no 1 conducting mothership operations in 13-05S 056-33E at 300245Z dec
  7. HYDROPAC 2975/10 · Piracy2010-12-29 → 2010-12-30
    M/V york conducting mothership operations in 00-23N 060-40E at 291540Z dec
  8. HYDROPAC 2974/10 · Piracy2010-12-29 → 2010-12-30
    M/V polar conducting mothership operations in 03-11S 051-31E at 291540Z dec
  9. HYDROPAC 2973/10 · Piracy2010-12-29 → 2011-01-08
    Pirate activity in 13-22S 053-59E at 291120Z dec
  10. HYDROPAC 2960/10 · Piracy2010-12-29 → 2010-12-29
    M/V york conducting mothership operations in 00-36N 058-37E at 290304Z dec
  11. HYDROPAC 2956/10 · Piracy2010-12-29 → 2010-12-30
    Previously hijacked F/V shih fu no 1 conducting mothership operations in 13-31S 052-20E at 282128Z dec
  12. HYDROPAC 2954/10 · Piracy2010-12-28 → 2011-01-08
    Pirate activity in 14-47S 052-13E at 281157Z dec
  13. HYDROPAC 2953/10 · Piracy2010-12-28 → 2010-12-28
    Pirate activity in 19-01S 052-41E at 270920Z dec
  14. HYDROPAC 2951/10 · Piracy2010-12-28 → 2010-12-29
    Possible mothership activity in 01-14.9N 056-12.0E at 280957Z dec
  15. HYDROPAC 2950/10 · Piracy2010-12-28 → 2010-12-29
    Previously hijacked F/V shih fu no 1 conducting mothership operations in 15-50S 052-22E at 280516Z dec
  16. HYDROPAC 2944/10 · Piracy2010-12-28 → 2010-12-31
    Possible mothership activity in 14-31S 055-20E at 271244Z dec
  17. HYDROPAC 2935/10 · Piracy2010-12-27 → 2010-12-29
    Previously hijacked F/V shih fu no 1 conducting mothership operations in 18-07.8S 052-43.2E at 270318Z dec
  18. HYDROPAC 2934/10 · Piracy2010-12-27 → 2010-12-31
    Previously hijacked conducting mothership operations in 15-46S 055-32E at 270512Z dec
  19. HYDROPAC 2929/10 · Piracy2010-12-27 → 2010-12-27
    Previously hijacked F/V shih fu no 1 conducting mothership operations in 17-32.42S 052-38.27E at 262155Z dec
  20. HYDROPAC 2928/10 · Piracy2010-12-27 → 2010-12-31
    Possible mothership activity in 07-20N 049-50E at 261330Z oct

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