RedactedNarrative: On Sunday May 28, 2017, at approximately 1930 hours boating accident # FWSW-17-OFF-009007 occurred on Keystone Lake, Hillsborough County. The location of this accident is a medium sized lake, surrounded by private residences. The recorded air temperature at the time of the accident was approximately 81°F. The water temperature at the time of the accident was approximately 80°F. 
  
  Vessel one (V01), a 20' Mastercraft, was heading north on the lake towing a tube. The vessel was travelling at approximately 15 knots. The vessels bow was high out of the water due to the number of people on board. V01 did not see V02, a 21' Bayline, floating with engine off in the middle of the lake. V01 port side bow struck V02's port side stern. V01 sustained minimal fiberglass, paint damage. V02 sustained fiberglass damage and engine damage. 
  
  No individuals on either vessel were wearing life vests. No injuries were reported on either vessel.