Unit 1 on 6/14/2009 at approximately 1700hrs.was traveling from jetties in Murrells Inlet towards Marlin Que Marina. Marina Operator and witness stated that the vessel motor vibrated hard and then jerked hard to the right. This caused vessel to J-Hook ejecting both operator and witness. The vessel continued to circle until it collided with a dock at 1504 Dolphin Ave., Murrells Inlet.