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 599/10 · Piracy2010-03-25 → 2010-04-03
    M/V attacked in 03-49S 046-10E at 250804Z mar
  2. HYDROPAC 577/10 · Piracy2010-03-23 → 2010-04-03
    Suspected hijacked vessel being used for pirate activity in 06-43S 044-22E at 230840Z mar
  3. HYDROPAC 576/10 · Piracy2010-03-23 → 2010-04-03
    M/V attacked in 03-48N 048-08E at 230808Z mar
  4. HYDROPAC 569/10 · Piracy2010-03-22 → 2010-03-27
    Possible mothership activity in 09-58S 044-02E at 220400Z mar
  5. HYDROPAC 548/10 · Piracy2010-03-19 → 2010-03-27
    Possible pirate mothership activity in 08-58S 044-02E at 191228Z mar
  6. HYDROPAC 543/10 · Derelicts2010-03-19 → 2010-03-22
    Derelict 20 meter vessel timber partially submerged and adrift in 12-03S 121-56E at 190219Z mar
  7. HYDROPAC 540/10 · Piracy2010-03-18 → 2010-03-27
    Possible pirate mothership activity vicinity 08-09S 045-12E at 181608Z mar
  8. HYDROPAC 534/10 · Piracy2010-03-18 → 2010-03-27
    Possible pirate mothership activity in: a. 03-16S 058-09E at 170414Z mar
  9. HYDROPAC 529/10 · Piracy2010-03-17 → 2010-03-27
    Pirate activity vicinity 02-47S 043-16E at 170900Z mar (approximately 160 miles southeast kismayo, somalia)
  10. HYDROPAC 515/10 · Surveys2010-03-16 → 2010-03-25
    Underwater operations in progress until further notice by M/V seahorse standard in 31-56.0S 115-20.8E
  11. HYDROPAC 505/10 · Piracy2010-03-15 → 2010-03-27
    M/V attacked in 11-02S 046-57E at 151317Z mar
  12. HYDROPAC 493/10 · Piracy2010-03-14 → 2010-03-20
    M/V attacked in 03-10S 062-06E at 120045Z mar
  13. HYDROPAC 492/10 · Derelicts2010-03-14 → 2010-03-17
    Derelict F/V partially submerged and adrift in 11-56-39S 122-47-32E at 140200Z mar
  14. HYDROPAC 490/10 · Derelicts2010-03-13 → 2010-03-16
    Derelict vessel luna, white and green hull, adrift in 28-20.42S 036-24.54E
  15. HYDROPAC 481/10 · Derelicts2010-03-12 → 2010-03-14
    Derelict 20 meter vessel partially submerged and adrift in 12-09.23S 122-51.06E at 120100Z mar
  16. HYDROPAC 475/10 · Piracy2010-03-12 → 2010-03-27
    M/V attacked in 03-32S 062-11E at 102335Z mar
  17. HYDROPAC 460/10 · Piracy2010-03-09 → 2010-03-10
    Fishing beacon detected in 06-17S 044-54E at 091500Z mar
  18. HYDROPAC 452/10 · Piracy2010-03-09 → 2010-03-20
    Three skiffs, possibly involved in piracy, vicinity 07-18S 048-06E
  19. HYDROPAC 444/10 · Piracy2010-03-08 → 2010-04-03
    F/V sakoba, previously hijacked, is being used as a platform for piracy in 00-52N 046-56E at 080704Z mar
  20. HYDROPAC 434/10 · Piracy2010-03-05 → 2010-03-20
    F/V attacked by four skiffs in 02-59S 045-50E at 050902Z mar

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