Poole Lifeboat, Atlantic 85 launched just before 21:00hrs (Friday October 27) to a report of a 20ft sailing boat a drift.
The vessel was seen passing the chain ferry, many informants had raised the alarm.
The Lifeboat crew found the vessel in the East Looe Channel,just outside the entrance to Poole Harbour.
When the lifeboat arrived on scene, the crew checked out the vessel and as nothing untoward was found, a tow line was attached and it was brought back to its mooring off Lilliput.
The lifeboat crew returned back to station and were ready for service just before 23:00hrs.