Weather conditions were calm with Force 2 winds and good visibility.
The lifeboat, with helm Dom Sharkey and crew Michael O'Sullivan and Tom Hayes on board, reached the casualty vessel at 12.10 pm. The skipper of the vessel had dropped anchor to prevent his boat drifting onto the rocky shore. Once the RNLI volunteers established that the people on board were safe and well and that the vessel had not suffered damage, they set up for a tow and took in the anchor.
At 12.30 pm the lifeboat had the cruiser, with her passengers and an RNLI crew member on board, under tow to Mountshannon Harbour.
After tying the cruiser safely alongside at Mountshannon Harbour, the lifeboat returned to Station and was ready for service again at 2.30 pm.
Dom Sharkey, volunteer helm at Lough Derg RNLI said: ‘We advise people to ensure that their vessels are regularly serviced, and, in the event of difficulties, to always carry a means of communication.'