RedactedNarrative: Vessel #1 and vessel #2 were both traveling east on Lake Eufaula towards the Porum Cut. Vessel #2 came to a stop and vessel #1 struck vessel #2 from the rear. The area of impact was approximately 200 yards south of the north shoreline and 3.5 mile west of the Eufaula Dam. The area of rest for both vessels was undetermined due to vessel #1 sinking and vessel# 2 taking on water but was towed to shore.  Operator 1 was at fault for alcohol use, with a .15 BAC.