The Lough Derg RNLI crew came to the aid of a cruiser with a family of four on board which had run aground near Portumna yesterday.
The alarm was raised by a member of the public on shore.
The lifeboat was out on exercise on the lake at the time of the call and headed immediately to the scene.
A lifeboat volunteer transferred across to the 34ft cruiser and carried out a thorough inspection of the vessel to ensure it was not holed.
The cruiser was taken back into safe water and made way under its own power.
