Two men were forced to cling to the hull of their fishing boat last night when it capsized off the Dunsborough coast.
A search and rescue operation was launched about 6.30pm when the men, aged 35 and 27, activated their emergency beacon.
An Australian Marine Safety Authority aircraft, the RAC Rescue helicopter and a vessel from the Naturaliste Volunteer Marine Rescue Group were involved in the search.
Marine rescue volunteers found the men about 8pm more than 7km off the Dunsborough coast.
The pair were not injured but taken to Busselton hospital as a precautionary measure.
A crew from Busselton Volunteer Marine Rescue Group later went out to salvage the boat but the vessel could not be located.
An AMSA spokeswoman said the men’s EPIRB was not registered, which made it harder to find them.
She encouraged all skippers to register emergency beacons before going out to sea.