The volunteer crew with helm Eleanor Hooker, Joe O’Donoghue, Doireann Kennedy and Kjell Jimmy Gundergjerde launched their inshore lifeboat at 4.45pm in Force 2 north-north-west winds with good visibility to the location north of the mouth of the Scarriff River, where the 21ft boat was reported to be high on a shoal.
A crew member transferred to the motor boat and found that the people on board were unharmed and wearing their lifejackets.
The motor boat was checked for damage before a tow was set up and the vessel was removed from the rocks into safe water.
Once towed past the middle ground and the drives, steering and rudder were found to be in good working order, the boat was allowed to continue on its journey.
Helm Eleanor Hooker advises boat users “to plan your passage and pay close attention to the navigational marks at the entrance to harbours and rivers on the lake”.
The lifeboat returned to the station and was ready for service again at 7.15pm.