RedactedNarrative: On 7-8-18 at approximately 1300 hours operator was backing out of his friends slip on the Spokane river at Driftwood dr., and did not back far enough. He shifted the boat forward and noticed he was to close to the pontoon vessel moored in a neighboring slip. When Operator1 realized he was too close he attempted to shift into reverse and the engine stalled. Operator1 had enough forward momentum that he struck vessel puncturing the casing on the lower unit on the outboard engine. V2 owner received a quote to repair the damage from Tobler Marina in Hayden, ID in the amount of $2,723.77 to repair the damage. When the accident occurred on Sunday the 8th Operator1 provided V2 owner with his contact and insurance information, the accident was not reported until Wednesday the 11th.