Indian Ocean

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

in force
23
last 12 months
22
since 1997
3,518
categories
15

In force now · 23

  1. 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.
  2. NAVAREA X 94/26 · Missiles2026-08-15
    Space debris danger area is in effect from Cape Darnely to Tasmania, daily 1525-2235 UTC, 20-26 August 2026.
  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
    Four yellow surface buoys with flashing yellow light every 5 seconds established within 0.3 nautical miles 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 conducting underwater operations in area bounded by 19-12S to 19-21S and 116-30E to 116-50E, 0.5 nautical miles clearance requested.
  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 is at position 19-52.73S 114-36.50E, requesting a 2.5 nautical mile clearance.
  11. NAVAREA X 91/26 · Missiles2026-08-05
    Space debris danger area from Cape Darnley to Tasmania, 80 nautical miles either side of centreline, daily between 1455 and 2205 UTC, 10 to 16 August 2026.
  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 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
    Vessel Fugro Kwilena is conducting underwater operations in an area bounded by 19-56.69 S to 20-26.06 S and 114-45.09 E to 115-30.10 E, requesting 1.5 nautical miles clearance.
  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 in position 29-26.99S 114-52.18E is 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 is supporting underwater operations in a bounded area; 2.5 nautical mile clearance requested.
  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 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
    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%
Other37611%
Exercises35310%
Piracy34010%
Cable ops1915%
Debris1093%
Icebergs822%
Wrecks351%
Containers221%
Volcanic50%
Towing30%
Mines10%

Archive · 3,495 cancelled

  1. HYDROPAC 3673/22 · Missiles2022-12-24 → 2022-12-29
    Hazardous operations, space debris 0850Z to 1355Z daily 28 dec thru 03 jan 23
  2. HYDROPAC 3672/22 · Surveys2022-12-24 → 2023-03-24
    Survey operations in progress until further notice by M/V pxgeo 2 towing 12 9000 meter long cables in area…
  3. HYDROPAC 3635/22 · Missiles2022-12-20 → 2022-12-22
    Hazardous operations, space debris 0358Z to 0515Z daily 21 dec thru 20 jan 23 in area bound by 24-55.00S…
  4. HYDROPAC 3572/22 · Nav aids2022-12-13 → 2022-12-16
    Great sandy island light 21-11.88S 115-38.28E unlit
  5. HYDROPAC 3568/22 · Exercises2022-12-13 → 2022-12-16
    Hazardous operations 151130Z to 151430Z and 160930Z to 161230Z dec in area bound by 20-48.36N 087-02.50E,…
  6. HYDROPAC 3531/22 · Cable ops2022-12-10 → 2023-01-01
    Cable operations in progress until 31 dec by cableship ile de batz along trackline joining 04-04.48S…
  7. HYDROPAC 3488/22 · Surveys2022-12-07 → 2022-12-13
    Underwater operations in progress until further notice by M/V lay vessel 108 in area bound by 20-54.00S…
  8. HYDROPAC 3471/22 · Missiles2022-12-06 → 2022-12-09
    Hazardous operations, space debris 090600Z to 091300Z dec in area bound by 13-40.00S 118-18.00E, 13-45.00S…
  9. HYDROPAC 3454/22 · Other2022-12-04 → 2022-12-07
    Floating fish haven with rope reported adrift in 09-45.20S 095-43.10E at 040800Z dec
  10. HYDROPAC 3438/22 · Exercises2022-12-02 → 2022-12-08
    Hazardous operations 060300Z to 060600Z, 070400Z to 070800Z and 080400Z to 081000Z dec in area bound by…
  11. HYDROPAC 3437/22 · Exercises2022-12-02 → 2022-12-02
    Hazardous operations 060300Z to 060600Z, 070400Z to 070800Z and 080400Z to 081000Z dec in area bound by…
  12. HYDROPAC 3436/22 · Exercises2022-12-02 → 2022-12-02
    Hazardous operations 060300Z to 060600Z, 070400Z to 070800Z and 080400Z to 081000Z jan in area bound by…
  13. HYDROPAC 3419/22 · Missiles2022-12-01 → 2022-12-13
    Hazardous operations, space debris 0018Z to 0141Z daily 06 thru 13 dec in area bound by 20-56.00S…
  14. HYDROPAC 3406/22 · Cable ops2022-11-29 → 2022-12-27
    Cable operations 03 thru 26 dec by cableship ile de re along trackline joining 03-36.50N 092-12.10E,…
  15. HYDROPAC 3388/22 · Missiles2022-11-28 → 2022-11-28
    Hazardous operations, space debris 0358Z to 0515Z daily 29 nov thru 25 dec in area bound by 24-55.00S…
  16. HYDROPAC 3378/22 · Debris2022-11-27 → 2022-11-30
    Fad buoy adrift in vicinity 09-21.25S 094-56.43E at 260717Z nov
  17. HYDROPAC 3355/22 · Derelicts2022-11-24 → 2022-11-27
    Derelict 13 meter F/V partially submerged and adrift in vicinity 14-18.55S 124-01.40E at 240600Z nov
  18. HYDROPAC 3343/22 · Missiles2022-11-23 → 2022-11-26
    Hazardous operations, rocket launching 260600Z to 261000Z nov: a. in area within ten miles of 13-43.90N…
  19. HYDROPAC 3301/22 · Missiles2022-11-20 → 2022-12-20
    Hazardous operations, space debris 0358Z to 0515 daily 25 nov thru 25 dec in area bound by 24-55.00S…
  20. HYDROPAC 3289/22 · Missiles2022-11-19 → 2022-12-04
    Hazardous operations, space debris 1842Z to 2201Z daily 22 nov thru 04 dec within 75 miles of trackline…

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