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 433/10 · Piracy2010-03-05 → 2010-03-13
    F/V attacked in 03-21S 045-56E at 050937Z mar
  2. HYDROPAC 431/10 · Piracy2010-03-05 → 2010-03-20
    F/V attacked in 04-34S 048-09E at 050639Z mar
  3. HYDROPAC 426/10 · Piracy2010-03-04 → 2010-03-13
    Fishing beacon detected in 04-08S 046-50E
  4. HYDROPAC 425/10 · Piracy2010-03-04 → 2010-03-13
    F/V attacked in 01-17N 047-04E at 041400Z mar
  5. HYDROPAC 423/10 · Cable ops2010-03-04 → 2010-04-04
    Seismic survey 042000Z mar to 010001Z may by M/V mezen towing 8300 meter long cable in area bound by 07-58S…
  6. HYDROPAC 416/10 · Piracy2010-03-04 → 2010-03-13
    F/V attacked in 03-26S 047-11E at 040728Z mar
  7. HYDROPAC 383/10 · Cable ops2010-02-27 → 2010-03-02
    Cable operations by M/V blue castor: a. 27 feb in 06-42.2S 039-21.6E
  8. HYDROLANT 346/10 · Exercises2010-02-23 → 2010-03-10
    Gunnery exercises 0400Z to 1300Z daily until 10 mar in area bound by 34-49S 019-56E, 34-27S 020-52E, 34-36S…
  9. HYDROPAC 351/10 · Exercises2010-02-23 → 2010-03-10
    Gunnery exercises 0400Z to 1300Z daily until 10 mar in area bound by 34-49S 019-56E, 34-27S 020-52E, 34-36S…
  10. HYDROLANT 345/10 · Missiles2010-02-23 → 2010-03-10
    Hazardous operations 0400Z to 1300Z daily until 10 mar in area bound by 34-49S 019-56E, 34-27S 020-52E,…
  11. HYDROPAC 350/10 · Missiles2010-02-23 → 2010-03-10
    Hazardous operations 0400Z to 1300Z daily until 10 mar in area bound by 34-49S 019-56E, 34-27S 020-52E,…
  12. HYDROPAC 304/10 · Nav aids2010-02-15 → 2010-02-20
    Nga chart 74054 (2ND ed)
  13. HYDROPAC 297/10 · Derelicts2010-02-15 → 2010-02-18
    Derelict M/V, black hull, adrift in 00-30S 085-35E at 120300Z feb
  14. HYDROPAC 255/10 · Exercises2010-02-09 → 2010-02-10
    Gunnery exercises 100300Z to 101200Z feb in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  15. HYDROPAC 246/10 · Derelicts2010-02-07 → 2010-02-10
    Derelict vessel adrift vicinity 11-49.5S 104-51.0E at 061405Z feb
  16. HYDROPAC 241/10 · Missiles2010-02-05 → 2010-02-09
    Hazardous operations 0430Z to 1030Z daily 07 and 09 feb in area bound by 20-45.4N 087-05.4E, 20-21.6N…
  17. HYDROPAC 212/10 · Missiles2010-02-02 → 2010-02-02
    Hazardous operations 0430Z to 1030Z daily 07 thru 09 feb in area bound by 20-45.35N 087-05.36E, 20-21.61N…
  18. HYDROPAC 211/10 · Missiles2010-02-02 → 2010-02-09
    Hazardous operations 0430Z to 1030Z daily 07 thru 09 feb in area bound by 20-45.4N 087-05.4E, 20-21.6N…
  19. HYDROPAC 190/10 · Piracy2010-01-31 → 2010-02-20
    Hijacked vessel in 02-27N 050-38E at 310700Z jan
  20. HYDROPAC 187/10 · Piracy2010-01-31 → 2010-01-31
    Hijacked vessel, blue hull with white superstructure, in 08-04N 052-36E at 310500Z jan

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