The Lough Derg RNLI lifeboat was called into action last evening.
The crew were on an exercise on the lake when a member of the public reported a vessel driving in an erratic manner towards the Corrakeen Islands and thought they might be in difficulty.
The lifeboat crew carried out a thorough search of the area for over an hour but there was no sign of the vessel.
The search was called off and the RNLI crew resumed their training exercise.
