RedactedNarrative: V1 operator moving in a Northbound direction, west of Port Jefferson marina when he passed approx. 100ft. astern of a tugboat. Said tugboat was performing maritime ops. As vessel 1 was directly astern of the tug, V1 drifted to the starboard and struck a piing, damaging the hull and gunwale of V1 on its starboard side. Operator of V1 states his vessel was affected by the propwash from the tugboat.