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 2928/11 · Piracy2011-10-17 → 2011-10-22
    F/V attacked in 06-27S 040-08E at 172114Z oct
  2. HYDROPAC 2917/11 · Piracy2011-10-16 → 2011-10-22
    M/V attacked in 05-01S 040-03E at 161057Z oct
  3. HYDROPAC 2907/11 · Piracy2011-10-15 → 2011-10-22
    Three F/V attacked vicinity 00-39N 050-32E on 15 oct
  4. HYDROPAC 2897/11 · Piracy2011-10-15 → 2011-10-22
    F/V attacked in 00-54N 050-13E at 150335Z oct
  5. HYDROPAC 2878/11 · Nav aids2011-10-13 → 2011-10-15
    Nga chart 74593 (1ST ed)
  6. HYDROPAC 2815/11 · Nav aids2011-10-07 → 2011-10-13
    Nga chart 74492 (7TH ed)
  7. HYDROPAC 2808/11 · Piracy2011-10-06 → 2011-10-15
    M/V attacked in 06-01S 042-20E at 061620Z oct
  8. HYDROPAC 2773/11 · Piracy2011-10-03 → 2011-10-08
    M/V attacked in 04-59N 058-00E at 030532Z oct
  9. HYDROPAC 2766/11 · Piracy2011-10-02 → 2011-10-08
    M/V attacked vicinity 03-55N 056-20E at 020403Z oct
  10. HYDROPAC 2731/11 · Icebergs2011-09-28 → 2011-10-01
    Iceberg reported vicinity 49-36.68S 063-23.30E at 280516Z sep
  11. HYDROPAC 2704/11 · Exercises2011-09-26 → 2011-09-26
    Gunnery exercises 260715Z to 261815Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  12. HYDROPAC 2696/11 · Other2011-09-25 → 2011-09-26
    M/V wizard reports crewman requiring medical assistance in 13-09S 085-29E at 251259Z sep
  13. HYDROPAC 2693/11 · Other2011-09-25 → 2011-10-01
    M/V hai soon reports crewman with serious head injury in 37-33S 107-06E at 251009Z sep
  14. HYDROPAC 2685/11 · Exercises2011-09-24 → 2011-09-27
    Gunnery exercises 270600Z to 271100Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  15. HYDROPAC 2674/11 · Derelicts2011-09-23 → 2011-09-26
    Derelict F/V on fire vicinity 08-26.0S 105-21.2E at 222038Z sep
  16. HYDROPAC 2660/11 · Exercises2011-09-22 → 2011-09-24
    Gunnery exercises 241245Z to 241600Z sep in area bound by 21-12.0S 054-57.0E, 21-26.0S 055-02.5E, 21-31.2S…
  17. HYDROPAC 2657/11 · Derelicts2011-09-21 → 2011-09-24
    M/V pacific express on fire and adrift in 04-24S 042-20E
  18. HYDROPAC 2642/11 · Piracy2011-09-20 → 2011-09-21
    M/V pacific express attacked vicinity 04-47S 044-35E at 200734Z sep
  19. HYDROPAC 2618/11 · Piracy2011-09-17 → 2011-09-24
    M/V attacked in 03-54.6S 041-04.7E at 171137Z sep
  20. HYDROPAC 2559/11 · Icebergs2011-09-11 → 2011-09-14
    Iceberg reported in 46-30.96S 048-18.34E

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