RedactedNarrative: Vessel #1 was attempting to dock at the Radio Island boat ramp when the vessel got caught in the current and spun around hitting Vessel #2, which was docked.  In an attempt to avoid collision, Vessel #1 accelerated just prior to impact causing greater impact speed.  Vessel #1 struck the port side engine on Vessel #2 with the rub rail on the port side corner of the stern.  There was no damage to Vessel #1 and Vessel #2 sustained a cracked cowl on the port side engine.