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 1654/09 · Exercises2009-09-14 → 2009-09-18
    Gunnery exercises 160001Z to 180001Z sep in area bound by 03-45S 045-00E, 07-25S 043-00E, 07-25S 054-00E,…
  2. HYDROPAC 1643/09 · Cable ops2009-09-12 → 2009-09-20
    Cable laying operations in progress until 19 sep by cableship chamarel in vicinity of trackline joining…
  3. HYDROPAC 1602/09 · Other2009-09-06 → 2009-09-09
    Vessel reports coming under attack in 02-03N 045-30E at 051630Z sep
  4. HYDROPAC 1598/09 · Debris2009-09-05 → 2009-09-05
    20 foot long partially submerged metallic object adrift vicinity 05-34N 081-54E
  5. HYDROPAC 1592/09 · Exercises2009-09-05 → 2009-09-09
    Gunnery exercises 090400Z to 090800Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  6. HYDROPAC 1553/09 · Nav aids2009-08-29 → 2009-08-30
    Nga chart 74492 (7TH ed)
  7. HYDROPAC 1533/09 · Other2009-08-27 → 2009-08-29
    Vessel reported coming under attack in 00-08N 044-50E at 270616Z aug
  8. HYDROPAC 1505/09 · Other2009-08-22 → 2009-12-12
    Nga chart 74451 (1ST ed)
  9. HYDROPAC 1462/09 · Other2009-08-16 → 2009-08-22
    Vessel reports coming under attack in 06-17N 054-41E at 161322Z aug
  10. HYDROPAC 1448/09 · Wrecks2009-08-14 → 2009-08-16
    Nga chart 74545 (3RD ed)
  11. HYDROPAC 1401/09 · Debris2009-08-06 → 2009-08-08
    Large fishing net adrift in 13-24S 122-06E at 060453Z aug
  12. HYDROPAC 1386/09 · Nav aids2009-08-04 → 2009-08-08
    Nga chart 74593 (1ST ed)
  13. HYDROPAC 1354/09 · Piracy2009-07-30 → 2009-08-08
    Suspect activity in 05-44N 050-06E at 301100Z jul approximately 95 miles ene of hobyo somalia
  14. HYDROPAC 1344/09 · Exercises2009-07-28 → 2009-07-30
    Hazardous operations 1830Z to 2000Z daily 29 jul thru 01 aug within 240 miles of 42-07S 041-34E
  15. HYDROPAC 1342/09 · Surveys2009-07-28 → 2009-07-29
    Drilling operations in progress until further notice by M/V markab in 21-18.5S 114-48.4E
  16. HYDROPAC 1319/09 · Nav aids2009-07-23 → 2009-07-24
    Nga chart 74492 (7TH ed)
  17. HYDROPAC 1291/09 · Debris2009-07-17 → 2009-07-24
    Large fishing net adrift in 12-10.4S 123-09.5E at 170030Z jul
  18. HYDROPAC 1270/09 · Cable ops2009-07-14 → 2009-07-31
    Cable laying operations in progress until 30 jul by cableship chamarel along trackline joining 19-55.0S…
  19. HYDROPAC 1265/09 · Derelicts2009-07-13 → 2009-07-20
    Derelict vessel adrift in 11-28S 118-29E at 111458Z jul
  20. HYDROPAC 1258/09 · Derelicts2009-07-12 → 2009-07-12
    Vessel disabled and adrift in 11-28S 118-29E at 101458Z jul

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