Indian Ocean

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

in force
23
last 12 months
27
since 1997
3,523
categories
15

In force now · 23

  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. NAVAREA X 94/26 · Missiles2026-08-15
    Space debris danger area is in effect from Cape Darnely to Tasmania, daily 1525-2235 UTC, 20-26 August 2026.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. NAVAREA X 91/26 · Missiles2026-08-05
    Space debris danger area from Cape Darnley to Tasmania, 80 nautical miles either side of centreline, daily between 1455 and 2205 UTC, 10 to 16 August 2026.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. AUSCOAST 253/26 · Nav aids2026-07-24
    Cliff Head Platform light in position 29-26.99S 114-52.18E is unlit.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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
26

By month (all years)

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

By category · since 1997

Derelicts62118%
Missiles54415%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,500 cancelled

  1. HYDROPAC 3705/16 · Surveys2016-11-30 → 2017-01-06
    Underwater operations in progress until further notice by M/V deep orient in 19-54.18S 115-16.67E
  2. HYDROPAC 3698/16 · Nav aids2016-11-30 → 2016-12-02
    Adele island light 15-30.6S 123-09.4E unlit
  3. HYDROPAC 3692/16 · Surveys2016-11-30 → 2016-11-30
    Australia-northwest coast DNC 04
  4. HYDROPAC 3678/16 · Exercises2016-11-28 → 2016-12-02
    Gunnery exercises 020800Z to 021400Z dec in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  5. HYDROPAC 3635/16 · Derelicts2016-11-25 → 2016-11-28
    Derelict F/V sudu duwa 2 adrift vicinity 04-20N 079-32E at 241600Z nov
  6. HYDROPAC 3630/16 · Nav aids2016-11-24 → 2016-11-26
    Karratha dgps station 20-42.4S 116-47.0E inoperative
  7. HYDROPAC 3625/16 · Derelicts2016-11-24 → 2016-12-28
    F/V maxim PUTHA02 disabled and adrift due to engine failure in 03-37N 086-53E at 240200Z nov
  8. HYDROPAC 3624/16 · Surveys2016-11-24 → 2018-05-15
    Oceanographic buoy established in 03-55.63N 080-28.23E
  9. HYDROPAC 3585/16 · Other2016-11-20 → 2016-12-08
    M/V mariolina de carlini reports crewman requiring medical assistance in 27-20.9S 040-39.0E at 201346Z nov
  10. HYDROPAC 3394/16 · Exercises2016-11-04 → 2016-11-08
    Gunnery exercises 081200Z to 082000Z nov in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  11. HYDROPAC 3393/16 · Derelicts2016-11-04 → 2016-12-08
    F/V sagara 02 disabled and adrift due to engine failure in 01-15N 080-10E on 03 nov
  12. HYDROPAC 3279/16 · Derelicts2016-10-26 → 2016-10-29
    Derelict eight meter vessel partially submerged and anchored in 21-29S 114-55E at 260155Z oct
  13. HYDROPAC 3272/16 · Surveys2016-10-26 → 2016-10-30
    Underwater operations in progress until further notice by M/V joides resolution in 13-05.23S 121-48.24E
  14. HYDROPAC 3249/16 · Exercises2016-10-23 → 2016-10-25
    Gunnery exercises 250800Z to 251400Z oct in area bound by 21-12.00S 054-57.00E, 21-19.30S 054-25.54E,…
  15. HYDROPAC 3242/16 · Piracy2016-10-22 → 2016-11-17
    M/V attacked in 04-28.1N 053-22.2E at 220655Z oct
  16. HYDROPAC 3180/16 · Derelicts2016-10-17 → 2016-11-03
    F/V keara duwa disabled and adrift due to engine failure in 02-01N 078-42E at 170310Z oct
  17. HYDROPAC 3160/16 · Surveys2016-10-16 → 2016-10-25
    Underwater operations in progress until further notice by M/V joides resolution in 15-03.32S 120-26.10E
  18. HYDROPAC 3154/16 · Other2016-10-15 → 2016-10-16
    F/V txori aundi reports crewman with arm amputation in 00-25N 063-08E at 151730Z oct
  19. HYDROPAC 3148/16 · Other2016-10-15 → 2016-10-15
    F/V txori aundi reports crewman with arm amputation in 01-37N 064-42E at 150700Z oct
  20. HYDROPAC 3095/16 · Derelicts2016-10-10 → 2016-10-13
    Derelict F/V partially submerged and adrift in 10-12.3S 107-05.4E at 100607Z 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.