RedactedNarrative: On Monday, November 29, 2021 I, Officer 1, was dispatched to the Grider Hill Boat Dock to the report of a houseboat that had apparently caught fire and sank in a slip of the marina. Upon contact with manager of Grider Hill Marina, he stated he had arrived at about 0830 and observed light smoke in the area of the slip. He traveled to the area and observed a houseboat missing from slip beloging to Owner. He also observed the walkway the houseboat had been tied to was burned severely. He returned to the marina office and reviewed video surveillance footage of the area. Although the camera was positioned several hundred yards away from the incident, he stated he observed a fire start at about 1230 hours this date in the area of the slip. He stated the fire was visible on video surveillance for the next few hours. At the time of this initial report, the damaged vessel has not been recovered due to the depth of the water (about 105'). Upon obtaining a partial description of the vessel it is described as a 1988 Sumerset 60' aluminum hull houseboat. Prior to leaving Grider Hill Marina, I asked Marina manager to provide an estimate for the damage to the dock. He stated he would speak to his maintenance director and they would provide me with an estimate.
  
  I then made contact with the owner of the vessel, Owner, who advised the boat had been unoccupied at the time of this incident. Owner stated he did not know what could have started a fire on board of the boat, that most of the electricity had been turned off and the boat had been winterized. He stated the only thing electrical he knew of that was being used was the battery charger. He also stated that a friend of his, Friend 1, and his wife Friend 2 had been at the Marina on Saturday, November 27, 2021 to check on their boat that was tied up a short distance from his. He stated Friend 1 had called and told him that everything looked fine on his boat at that time. 
  
  I made contact with Friend 1 by phone to determine what he had observed. He stated he had checked on his boat on the previous Saturday. He stated he had several friends with houseboats tied up at the same dock so he visually checked on each one to make sure everything was fine. He stated Owner's boat had been properly tied as well as all the canvases had been properly secured. I asked if he had boarded Owner's boat to check the interior. He stated he had not boarded the boat only observing it from the dock.  On Tuesday, February 15, 2022, I made contact with Grider Hill Marina to see if they had figured an estimate for the damage. At that time, there was no estimate yet available.  
  
  At the time of this report, the houseboat has not been recovered from the bottom of the lake.  This report has only been compiled based on witness statements and information provided by employees of the marina and the owner of the vessel.  The estimate used in this report has been provided by the insurance agency covering the assessed value of the houseboat.  If and when the houseboat is recovered the damage will be able to be assessed and possibly evidence obtained with this report being revisited.