Indian Ocean

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

in force
21
last 12 months
28
since 1997
3,524
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
26

By month (all years)

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

By category · since 1997

Derelicts62118%
Missiles54515%
Nav aids46113%
Surveys37911%
Other37611%
Exercises35310%
Piracy34110%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,503 cancelled

  1. HYDROPAC 520/14 · Surveys2014-02-22 → 2014-03-12
    Underwater operations in progress until further notice by M/V joseph plateau in 19-55.20S 115-23.00E
  2. HYDROPAC 499/14 · Containers2014-02-19 → 2014-02-22
    Container adrift in 09-04S 105-34E at 190830Z feb
  3. HYDROPAC 496/14 · Nav aids2014-02-19 → 2017-01-28
    Cancel HYDROPAC 483/14(29)
  4. HYDROPAC 435/14 · Piracy2014-02-13 → 2014-02-22
    M/V attacked vicinity 01-07N 044-07E at 131400Z feb
  5. HYDROPAC 415/14 · Other2014-02-11 → 2014-02-22
    Vessel requesting assistance in 09-04S 051-02E
  6. HYDROPAC 392/14 · Other2014-02-09 → 2014-12-04
    Pipelaying operations in progress until further notice by M/V lorelay in 20-01S 115-12E
  7. HYDROPAC 366/14 · Nav aids2014-02-06 → 2014-02-08
    Australia-northwest Coast
  8. HYDROPAC 318/14 · Nav aids2014-01-31 → 2014-02-02
    Cancel HYDROPAC 161/14
  9. HYDROPAC 263/14 · Nav aids2014-01-26 → 2014-01-28
    Australia-northwest Coast
  10. HYDROPAC 224/14 · Surveys2014-01-22 → 2014-02-06
    Iles de kerguelen
  11. HYDROPAC 208/14 · Exercises2014-01-20 → 2014-01-20
    Gunnery exercises in progress until 202100Z jan in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E,…
  12. HYDROPAC 191/14 · Mines2014-01-19 → 2014-01-25
    Navigation prohibited within one mile
  13. HYDROPAC 164/14 · Cable ops2014-01-17 → 2014-02-16
    Seismic survey 19 jan thru 15 feb by M/V bgp challenger towing 10000 meter long cable in area bound by…
  14. HYDROPAC 161/14 · Nav aids2014-01-17 → 2014-01-31
    Australia-northwest Coast
  15. HYDROPAC 156/14 · Derelicts2014-01-16 → 2014-01-19
    Derelict 76 meter hull adrift vicinity 20-14.48S 053-08.23E at 151501Z jan
  16. HYDROPAC 145/14 · Missiles2014-01-15 → 2014-01-20
    Hazardous operations 0430Z to 0830Z daily 20 and 21 jan and 220230Z to 220630Z jan in area bound by…
  17. HYDROPAC 110/14 · Other2014-01-10 → 2014-01-13
    Buoy with 1000 meter long rope adrift in 40-10.8S 023-02.6E at 091930Z jan
  18. HYDROPAC 107/14 · Nav aids2014-01-10 → 2014-01-11
    Australia-northwest Coast
  19. HYDROPAC 102/14 · Other2014-01-09 → 2014-01-10
    Buoy with 1000 meter long rope adrift in 40-43.36S 023-06.36E at 081640Z jan
  20. HYDROPAC 82/14 · Other2014-01-08 → 2014-01-09
    Buoy with 1000 meter long rope adrift in 41-24S 022-55E at 071345Z 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.