RedactedNarrative: Vessel 1 was underway traveling North on Cayuga lake South of Myers Point. Vessel 1 was running at approximately 2500 rpms exercising a break in period for new engine. Boat speed was around 25mph but not fully on plane.  Operator of vessel 1 was sitting in helm seat and not standing. It is postulated that the bow of the boat obstructed the necessary vision to see vessel 2, a small white boat also traveling North. Vessel 1 struck vessel 2 in the transom knocking the motor off vessel 2 and causing injury to both occupants of vessel 2. Both occupants were brought aboard vessel 1 and first aid was applied until rescue teams arrived. Occupants of both vessel were taken ashore for care and questioning.