RedactedNarrative: Subject drove 54 foot houseboat into bridge fender piling.
  
  Operator rented the vessel some three hours previously and had not operated a vessel of this size before.
  
  He approached the bridge and when the bridge tender advised via vhf radio that the bridge would not be opened until 2030 hours the operator of the house boat attempted to negotiate the vessel in such a way to park on the south bank.  In doing so the operator did not leave himself enough room as he ran parallel to the railroad facing back south he struck the southern most stack of bridge fender pilings.