The skipper of the 10-metre yacht contacted the coastguard for assistance after briefly running aground near the Packet pier.
Within minutes the lifeboat and its volunteer crew – coxswain Nick Keogh, mechanic Tommy Murphy, Dave O'Leary, Lisa O'Leary, Connie O'Gara and Joe Hanlon – were alongside the vessel.
Two volunteers went on board the yacht to establish a towline and assist as the lifeboat towed the vessel to the north quay.
Elsewhere at the weekend, Arranmore RNLI in Co Donegal was called to assist a 27-foot fishing boat with two on board just after 5pm on Saturday evening (21 November).
The boat from the fishing village of Burtonport was less than half a mile from the lifeboat station when it got into difficulty with a fouled propeller.
Arranmore RNLI second coxswain Jimmy Early and his volunteer crew secured a tow rope on board the fishing boat and towed it into Burtonport Harbour at 6.15pm.
On returning to the station, Early said the crew was pleased to be of assistance.
"It was very fortunate that the boat was fishing close to the station when it got into difficulty and we were able to establish a tow rope within minutes of launching, it was certainly one of the fastest rescues we had," he said.