RedactedNarrative: Vessel #1 launched from the Riverview Ice House Boat Ramp at approximately 6:30 p.m. and cruised West across the Rock River and tied onto a friends private dock along the West Shoreline to watch the fireworks from their friends yard.  At approximately 10:10 p.m. they observed Vessel #1 gradually taking on water as it was tied onto the private dock.  As operator and passenger attempted to cruise back across the Rock River to the Riverview Ice House Boat Ramp at No Wake speed to remove their boat from the river, their prop caught another boats anchor line.  As they raised the trim of the outboard out of the water and released the anchor line from their lower unit, Vessel #1 began to flood and sink.  They lost electrical and engine power because of the flooding and were towed to shore by a unknown bystander who left the scene prior to law enforcement arrival.  
  
  Examination of Vessel #1 at the scene on the boat trailer revealed no visible signs of hull damage or integrity issues.  operator advised he did have a crack in the PVC tubing within the hull leading to the livewell compartment.  A verbal warning was issued for lack of battery terminal covers.  All other safety equipment onboard was in serviceable condition.   EOR
   