RedactedNarrative: Watercraft #2 was anchored in the water and had two swimmers laying on a tube that was tied to the boat. 
  
  Watercraft #1 drove too close to Watercraft #2 and struck the tube and two occupants, causing injury to both parties on the tube. Life jackets were being worn on both watercraft, but not by the swimmers on the tube. Alcohol was not a factor. Operator #1 received a warning regarding operating a PWC too close to other watercraft.