RedactedNarrative: Vessel # 1 was legally tied to dock/moored and secured by the registered owner in his boathouse.
  
  Owner of vessel # 1 stated in effect: We took the boat out on Sunday, July 30th and everything was fine.  I brought it back to my boathouse and secured it there.  We went away for couple of weeks.  I came into the boathouse today (August 21st, 2017) and that's when I noticed it sunk.
  
  Investigation Revealed:  Vessel # 1 was legally tied and secured to dock inside boathouse.  Due to an undetermined reason vessel # 1 took on water some time between the dates of July 30th, 2017 and August, 21st, 2017 and sunk. An assessment of vessel # 1 revealed no environmental impact.  Owner was advised to make arrangements to remove the vessel from water prior to it potentially causing any environmental issues. As of 08/22/2017, vessel # 1 was removed from the water by the owner.