HELENSBURGH'S lifeboat crew rescued a man on Saturday after a yacht ran aground off Dumbarton Castle.

The lifeboat crew rescued the man – the only person on board the vessel – after finding the yacht "very firmly aground" at 12.27pm.

With two hours still to go to low tide it was quickly established that the yacht could not be refloated; after taking the man to Sandpoint Marina in Dumbarton, the lifeboat was stood down by the coastguard at 1.20pm.

READ MORE: Man dies despite Helensburgh lifeboat rescue effort

At 9.15pm on Saturday the UK Coastguard reported that the owner of the yacht had successfully re-boarded the vessel with a friend; when it floated off on the high tide, they were able to motor safely into Sandpoint Marina.