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

AUSCOAST 275/26 · Surveys2026-08-16
Drill rig transocean endurance / V7A7398 / 538010768 in position 19-31.18S 116-06.65E 2.5 nm clearance…
NAVAREA X 94/26 · Missiles2026-08-15
NAVAREA X 94/26
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.
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
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.
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.
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.
AUSCOAST 270/26 · Surveys2026-08-10
Special purpose vessel ve constructor / H9YT / 373335000 conducting underwater operations in an area bounded…
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.
AUSCOAST 267/26 · Surveys2026-08-05
Drill rig jansz FCS/995031119 in position 19-52.73S 114-36.50E 2.5 nm clearance requested
NAVAREA X 91/26 · Missiles2026-08-05
NAVAREA X 91/26
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.
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.
AUSCOAST 260/26 · Surveys2026-08-01
Special purpose vessel bhagwan dryden / vhco / 503010110 conducting underwater operations in position…
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.
AUSCOAST 255/26 · Surveys2026-07-27
Special purpose vessel fugro kwilena / MLOV8 / 503147420 conducting underwater operations in an area bounded…
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.
AUSCOAST 253/26 · Nav aids2026-07-24
Cliff head platform light Q1754-8 in position 29-26.99S 114-52.18E unlit
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.
AUSCOAST 130/26 · Other2026-04-04
Semi-submerged mooring lightbuoy fl.w in position 20-16.32S 116-16.58E
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.
AUSCOAST 120/26 · Surveys2026-03-29
Special purpose vessel safe boreas 565905000 supporting underwater operations in an area bounded by…
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

By year

By month (all years)

By category · since 1997

Derelicts	621	18%
Missiles	542	15%
Nav aids	461	13%
Surveys	377	11%
Other	375	11%
Exercises	353	10%
Piracy	340	10%
Cable ops	191	5%
Debris	109	3%
Icebergs	82	2%
Wrecks	35	1%
Containers	22	1%
Volcanic	5	0%
Towing	3	0%
Mines	1	0%

Archive · 3,494 cancelled

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