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 196/02 · Other2002-01-31 → 2003-06-28
    Emergency ordnance jettison area established until further notice within 100 yards of trackline between…
  2. HYDROPAC 181/02 · Surveys2002-01-29 → 2002-02-24
    Underwater research operations 03 thru 23 feb by M/V shinkai 6500 and M/V yokosuka within ten miles of…
  3. HYDROPAC 171/02 · Piracy2002-01-28 → 2002-01-28
    Vessel princess sarah under armed attack by pirates in 08-12N 050-17E
  4. HYDROPAC 168/02 · Other2002-01-28 → 2002-03-15
    One person requiring medevac from aldabra island (09-25S 046-20E) to mahe, assumption island
  5. HYDROPAC 133/02 · Surveys2002-01-22 → 2002-04-26
    Submerged oceanographic moorings established in: 1. 32-03.14S 115-07.18E
  6. HYDROPAC 83/02 · Piracy2002-01-14 → 2002-01-14
    Vessel princess sarah under armed attack by pirates in 07-49N 049-57E
  7. HYDROPAC 78/02 · Other2002-01-12 → 2002-01-13
    M/V artemis reports seriously ill crewman requiring medical assistance in 20-05S 068-58E at 121430Z jan
  8. HYDROPAC 73/02 · Other2002-01-11 → 2002-01-12
    M/V artemis reports seriously ill crewman requiring medical assistance in 20-31S 074-02E at 111630Z jan
  9. HYDROPAC 56/02 · Other2002-01-10 → 2002-01-12
    M/V artemis reports crewman with malaria in 21-09S 082-30E at 100400Z jan
  10. HYDROPAC 2111/01 · Other2001-12-28 → 2001-12-31
    Three 500 meter long cables adrift vicinity 20-13S 116-13E on 27 dec
  11. HYDROPAC 2091/01 · Other2001-12-25 → 2001-12-28
    Pipelaying operations in progress until further notice by M/V cso apache along trackline between 21-13.5S…
  12. HYDROPAC 2070/01 · Derelicts2001-12-19 → 2002-01-03
    Derelict M/V lissom adrift vicinity 09-09.0S 073-32.5E at 160945Z dec
  13. HYDROPAC 2007/01 · Exercises2001-12-08 → 2001-12-10
    Gunnery exercises 101800Z to 101930Z dec within 10 miles of 20-38S 055-57E
  14. HYDROPAC 1944/01 · Other2001-11-29 → 2002-01-11
    M/V bremer flagge reports crewman with high fever and severe stomach pain in 09-49S 043-21E
  15. HYDROPAC 1910/01 · Cable ops2001-11-24 → 2002-01-02
    Seismic survey in progress until further notice by M/V pacific sword towing 3.5 mile long cable in area…
  16. HYDROPAC 1888/01 · Other2001-11-21 → 2001-11-22
    Vessel amer sports one reports crewman with suspected blocked intestine in 48-00S 087-29E at 211410Z nov
  17. HYDROPAC 1861/01 · Other2001-11-18 → 2001-11-22
    Four persons overboard from M/V nego kim vicinity 20-22S 116-39E at 180900Z nov
  18. HYDROPAC 1809/01 · Nav aids2001-11-09 → 2001-11-15
    Mount klein light 32-12.8S 115-40.4E unlit
  19. HYDROPAC 1802/01 · Debris2001-11-08 → 2001-11-15
    15 meter long metal object adrift vicinity 26-40S 038-15E
  20. HYDROPAC 1790/01 · Other2001-11-06 → 2001-11-07
    Vessel grace reports crewman with arm injury in 08-22S 079-26E at 051200Z nov

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