In2416aa operated back out of the its respective dock slip, turned to the left and accelerated causing the starboard stern of its hull to collide with the lower unit of vessel in8366bn (owned, but not occupied).  
Next while trying to pull out of the manuever, the metal cage guarding the outboards of vessel in2416aa collided with the stern fiberglass of in6534dc(owned, but not operated) causing a scrape in the paint and fiberglass and turning the lower unit to the left. 
In2416aa had fiberglass damage to the starboard stern hull and scraping on the starboard side of the cage which protects the outboard engines, both consistant with the damage to in8366bn and in6534dc.  
It must be noted that the force of the collision moved vessel in8366bn sideways on the lift, which was consistant with the direction of travel and impact from in2416aa. 
Pictures are attached to show damage and impact direction.
Fishers