RedactedNarrative: The operator was motoring out of the cove to check wind conditions to sail his vessel when his vessel grounded on a rock. At this time the lake level was approximately 18-20” lower than “full lake level”.  The operator was very knowledgeable of the area and his vessel. After the incident the vessel was driven to a marina where a diver was able to assess the damage. The vessel has damage to its keel and compression damage to the hull.