RedactedNarrative: On Thursday, June 8, 2017, I responded to a boating incident that occurred around the area of the Savannah boat ramp, on Kentucky Lake, in Hardin County, Tennessee.  
  
  At approximately 1636 hours, subject was operating a 1973 Cheetah vessel (TN6821T) when the thru hull exhaust boot failed, causing water to fill inside the vessel.  The vessel took on a significant amount of water and sank.  Operator left the vessel and was able to swim to shore.