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 928/05 · Nav aids2005-06-08 → 2005-09-22
    Welangilala light 16-45.2S 179-06.3W unlit and RACON inoperable
  2. HYDROPAC 832/05 · Nav aids2005-05-20 → 2005-05-22
    Cape naturaliste light 33-32.4S 115-01.0E range temporarily reduced to 19 miles
  3. HYDROPAC 819/05 · Other2005-05-18 → 2005-10-27
    Degerando island light 15-20.0S 124-11.9E at reduced intensity
  4. HYDROPAC 713/05 · Nav aids2005-04-28 → 2005-10-27
    RACON at port walcott buoy C1 20-23.2S 117-25.6E inoperative
  5. HYDROPAC 680/05 · Exercises2005-04-25 → 2005-05-25
    Hazardous operations 0430Z to 0600Z daily 27 apr thru 25 may in area bound by 37-30S 075-30E, 37-30S…
  6. HYDROPAC 674/05 · Other2005-04-24 → 2008-02-10
    Navigation prohibited until further notice by foreign vessels along trackline joining 01-55.0N 096-29.0E,…
  7. HYDROPAC 588/05 · Nav aids2005-04-09 → 2005-10-27
    Point moore light 28-47.1S 114-34.7E unlit
  8. HYDROPAC 546/05 · Derelicts2005-04-03 → 2005-05-20
    45 meter F/V yu cheng, suffering a fire and adrift in 37-57S 056-00E
  9. HYDROPAC 480/05 · Other2005-03-23 → 2005-05-13
    M/V kyma reports crewman with heart attack in 08-07N 052-30E at 230200Z mar
  10. HYDROPAC 449/05 · Exercises2005-03-15 → 2005-03-15
    Hazardous operations 150400Z to 150700Z mar, in area bound by: 21-12.0S 054-57.0E, 21-26.0S 055-02.5E,…
  11. HYDROPAC 274/05 · Surveys2005-02-14 → 2005-03-22
    Submarine research operations 19 feb thru 03 mar and 11 thru 21 mar by M/V natsushima with submersible in…
  12. HYDROPAC 214/05 · Surveys2005-02-02 → 2005-03-02
    Survey operations in progress until further notice by M/V southern supporter in area bound by 21-12S…
  13. HYDROPAC 40/05 · Other2005-01-07 → 2005-03-02
    M/V global island taking on water in 00-54.1N 044-56.6E
  14. HYDROPAC 16/05 · Other2005-01-03 → 2005-01-05
    Two persons overboard from M/V global island in 00-54.09N 044-56.00E
  15. HYDROPAC 15/05 · Surveys2005-01-03 → 2005-10-27
    Underwater operations in progress until further notice in 19-16.6S 116-36.8E
  16. HYDROPAC 4/05 · Icebergs2005-01-01 → 2005-01-08
    Large iceberg sighted in 47-54S 051-49E
  17. HYDROPAC 2002/04 · Icebergs2005-01-01 → 2005-01-01
    Large iceberg sighted in 47-54S 051-49E at 010510Z jan
  18. HYDROPAC 1969/04 · Nav aids2004-12-26 → 2005-03-02
    Gantheaume point light 17-58.5S 122-10.6E unlit
  19. HYDROPAC 1960/04 · Wrecks2004-12-24 → 2004-12-24
    Vessel sank in 12-24.5S 124-36.5E at 240420Z dec
  20. HYDROPAC 1925/04 · Surveys2004-12-16 → 2005-03-02
    Underwater operations in progress until further notice by M/V GEOSEA/LAXI5 in 19-26.9S 116-29.3E

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