RedactedNarrative: On 07/17/2022 Vessel (V1), a 1980 Kayot Deck boat, was being operated by Operator 1 (O1) out on Lewis and Clark Lake, Yankton County, South Dakota with two other passengers (P1) on board. At approximately 9:10PM O1 was traveling east bound on Lewis and Clark Lake at approximately 15-20mph. O1 began to turn towards the south when a large crack occurred on the stern of V1. The outboard of the boat broke off the transom and was hanging on to the V1 by the steering cables.
  
  O1 stated the motor shutoff and V1 began taking on water from the stern of the boat. O1 and the two other passengers exited the boat while V1 took on water and ended up flipping over. O1 and passengers were picked up by a passing boat.
  
  SO was first on scene to gather initial information from O1 and passengers.
  
  On 07/18/2022, WCO assisted with towing V1 out of the water. Upon getting V1 out of the water, WCO observed that the transom was made of ply wood and appeared to be weak and starting to rot. WCO believed the 150 HP motor was to much for the weak/rotten transom.