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 831/99 · Other1999-08-21 → 1999-10-08
    M/V pmonte alegre in 00-10S 050-08E reports crew member with head injury requiring medevac
  2. HYDROPAC 762/99 · Derelicts1999-08-09 → 1999-08-27
    Derelict 40 foot M/V salibo adrift vicinity 12-33S 093-38E at 090400Z aug
  3. HYDROPAC 701/99 · Cable ops1999-07-28 → 1999-09-17
    Underwater cable operations 29 jul until further notice by cableship seacor argosy along trackline between…
  4. HYDROPAC 671/99 · Other1999-07-22 → 1999-07-26
    Underwater ordnance detonations 260200Z to 261000Z jul in area bound by 30-30S 113-30E, 30-30S 114-30E,…
  5. HYDROPAC 651/99 · Nav aids1999-07-19 → 1999-07-21
    Point cloates light 22-42.5S 113-40.7E unreliable
  6. HYDROPAC 624/99 · Cable ops1999-07-10 → 1999-07-28
    Cable operations in progress until 31 jul by cableship seacor argosy along trackline between 31-48S 115-36E…
  7. HYDROPAC 622/99 · Other1999-07-09 → 1999-08-20
    Persons overboard from vessel in 13-23S 067-05E at 090611Z jul
  8. HYDROPAC 536/99 · Nav aids1999-06-17 → 1999-06-17
    North island light 28-17.6S 113-35.6E unreliable
  9. HYDROPAC 492/99 · Icebergs1999-06-02 → 1999-06-09
    Large iceberg reported in 46-20S 042-02E at 301400Z may
  10. HYDROPAC 455/99 · Containers1999-05-23 → 1999-07-09
    Forty containers adrift vicinity 10-30S 040-44E at 231230Z may
  11. HYDROPAC 388/99 · Cable ops1999-05-08 → 1999-05-28
    Seismic survey in progress until further notice by M/V ramform towing three mile long cables in area bound…
  12. HYDROPAC 362/99 · Cable ops1999-04-30 → 1999-05-01
    Seismic survey in progress until further notice by M/V acadian searcher towing 3.5 mile long cable between…
  13. HYDROPAC 272/99 · Other1999-04-07 → 1999-04-30
    Partially submerged F/V in 12-50S 123-30E at 070415Z apr marked by buoy, fl w 2 sec
  14. HYDROPAC 227/99 · Nav aids1999-03-24 → 1999-10-25
    Griffen venture mooring buoy 21-13.4S 114-38.8E unlit and RACON inoperative
  15. HYDROPAC 225/99 · Cable ops1999-03-24 → 1999-03-27
    Seismic survey in progress until further notice by M/V nordic explorer towing 2.5 mile long cable between…
  16. HYDROPAC 223/99 · Nav aids1999-03-22 → 1999-03-29
    North west cape light 21-48.4S 114-09.3E unlit
  17. HYDROPAC 219/99 · Nav aids1999-03-21 → 1999-03-23
    Point d'entrecasteaux light 34-50.4S 116-00.1E unlit
  18. HYDROPAC 212/99 · Nav aids1999-03-18 → 1999-03-20
    D'entrecasteaux point light 34-50.4S 116-00.1E unlit
  19. HYDROPAC 209/99 · Nav aids1999-03-18 → 1999-03-22
    Cape inscription light 25-28.9S 112-58.3E unlit
  20. HYDROPAC 180/99 · Cable ops1999-03-08 → 1999-03-20
    Seismic survey in progress until further notice by M/V nordic explorer towing 2.5 mile long cable in area…

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