RedactedNarrative: Vessel 1 drifting in middle of lake.  Vessel 2 (PWC) headed toward vessel 1 at approx. 10-20 mph.  Operator of vessel 2 underestimated speed and tuned at last minute but crashed into vessel #1, causing severe damage.  Operator of #2 cited for negligent operation.  Operator2 had a .013 BAC.