Indian Ocean

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

in force
23
last 12 months
22
since 1997
3,517
categories
15

In force now · 23

  1. AUSCOAST 275/26 · Surveys2026-08-16
    Drill rig transocean endurance / V7A7398 / 538010768 in position 19-31.18S 116-06.65E 2.5 nm clearance…
  2. NAVAREA X 94/26 · Missiles2026-08-15
    NAVAREA X 94/26
  3. 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.
  4. AUSCOAST 273/26 · Nav aids2026-08-14
    4 X yellow surface buoys, fl y 5 sec, established within 0.3NM of 29-27.00S 114-52.18E
  5. 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.
  6. 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.
  7. 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.
  8. AUSCOAST 270/26 · Surveys2026-08-10
    Special purpose vessel ve constructor / H9YT / 373335000 conducting underwater operations in an area bounded…
  9. 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.
  10. AUSCOAST 267/26 · Surveys2026-08-05
    Drill rig jansz FCS/995031119 in position 19-52.73S 114-36.50E 2.5 nm clearance requested
  11. NAVAREA X 91/26 · Missiles2026-08-05
    NAVAREA X 91/26
  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 / vhco / 503010110 conducting underwater operations in position…
  15. HYDROPAC 2157/26 · Surveys2026-07-27
    Underwater operations are underway by the vessel Fugro Kwilena in the eastern Indian Ocean off Australia until further notice. A two-mile berth is requested.
  16. AUSCOAST 255/26 · Surveys2026-07-27
    Special purpose vessel fugro kwilena / MLOV8 / 503147420 conducting underwater operations in an area bounded…
  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 Q1754-8 in position 29-26.99S 114-52.18E 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
    Semi-submerged mooring lightbuoy fl.w in 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 565905000 supporting underwater operations in an area bounded by…
  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 565905000 supporting underwater operations in an area bounded by…
  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
    Semi-submerged mooring lightbuoy fl.w in 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%
Missiles54215%
Nav aids46113%
Surveys37711%
Other37511%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,494 cancelled

  1. HYDROPAC 1010/24 · Cable ops2024-03-28 → 2024-04-08
    Pipeline operations in progress until further notice by M/V seven oceans in area bound by 19-52.41S…
  2. HYDROPAC 1002/24 · Other2024-03-27 → 2024-03-30
    F/V kalidu putha, yellow and white hull, reports crewman requiring medical assistance in 00-35.00N…
  3. HYDROPAC 996/24 · Nav aids2024-03-26 → 2024-04-29
    Gantheaume point light 17-58.45S 122-10.65E unlit
  4. HYDROPAC 987/24 · Other2024-03-26 → 2024-03-29
    Fad with rope adrift in 13-59.63S 120-44.18E at 260816Z mar
  5. HYDROPAC 977/24 · Other2024-03-25 → 2024-03-28
    Fad with rope adrift in 13-04.90S 122-54.08E
  6. HYDROLANT 620/24 · Missiles2024-03-24 → 2024-03-31
    Hazardous operations, space debris 0058Z to 0427Z daily 30 mar thru 07 apr in area bound by 08-53.00S…
  7. HYDROPAC 970/24 · Missiles2024-03-24 → 2024-03-31
    Hazardous operations, space debris 0058Z to 0427Z daily 30 mar thru 07 apr in area bound by 08-53.00S…
  8. HYDROPAC 942/24 · Cable ops2024-03-22 → 2026-08-14
    Cable operations in progress until further notice by the vessel Nexans Skagerrak along a trackline between positions 20-28.32S 114-52.68E and 20-41.52S 115-25.26E. One mile berth requested.
  9. HYDROPAC 912/24 · Missiles2024-03-19 → 2024-03-26
    Hazardous operations, space debris 2258Z to 0327Z daily 24 mar thru 02 apr in area bound by 08-53.00S…
  10. HYDROLANT 570/24 · Missiles2024-03-19 → 2024-03-26
    Hazardous operations, space debris 2258Z to 0327Z daily 24 mar thru 02 apr in area bound by 08-53.00S…
  11. HYDROPAC 905/24 · Missiles2024-03-18 → 2024-03-24
    Hazardous operations, space debris 2321Z to 0622Z daily 21 thru 30 mar in area bound by 08-53.00S…
  12. HYDROLANT 564/24 · Missiles2024-03-18 → 2024-03-24
    Hazardous operations, space debris 2321Z to 0622Z daily 21 thru 30 mar in area bound by 08-53.00S…
  13. HYDROPAC 883/24 · Piracy2024-03-16 → 2024-03-18
    M/V ruen hijacked in 06-40.58N 052-09.19E at 160941Z mar
  14. HYDROPAC 864/24 · Other2024-03-15 → 2026-08-14
    Navigation is prohibited in a Madagascar area due to underwater cables, bounded by specified coordinates in the western Indian Ocean.
  15. HYDROPAC 862/24 · Piracy2024-03-14 → 2024-03-16
    M/V ruen hijacked in 06-40.00N 052-11.00E at 141515Z mar
  16. HYDROPAC 851/24 · Missiles2024-03-13 → 2024-03-14
    Hazardous operations, space debris 1243Z to 1711Z 14, 15, and 18 mar and 1243Z to 1500Z 16 and 17 mar in…
  17. HYDROPAC 850/24 · Surveys2024-03-13 → 2024-03-22
    Underwater operations in progress until further notice by M/V sapura constructor in area bound by 21-17.82S…
  18. HYDROPAC 842/24 · Piracy2024-03-13 → 2024-03-16
    M/V reports possible piracy activity in 01-27.00N 054-53.00E at 120953Z mar
  19. HYDROPAC 833/24 · Missiles2024-03-13 → 2024-03-14
    Hazardous operations, space debris 1243Z to 1711Z daily 14, 15 and 18 and 1243Z to 1500Z daily 16 and 17 mar…
  20. HYDROPAC 823/24 · Piracy2024-03-12 → 2024-03-15
    M/V attacked in 01-27.00N 054-53.00E at 120853Z 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.