Vessel was docking at Pot Nets Bayside entering slip in westerly direction.  Port side pontoon went under slip dock impacting same.  At time was not determined that damage had occurred.  On 6/14/10, vessel had port side list and was pulled.  On inspection, located damge that was an "x" type puncture to forward, port side pontoon on outside of same.  This allowed water to enter pontoon.  Went to dock and located exposed carriage bolts which would be consistent with damage caused.  Tides were also consistent with allowing pontoon to impact the exposed bolt.  No negligence or intent determined through operator interview.  Damage caused by incedental contact while performing docking maneuver.
long neck                     