RedactedNarrative: Vessel #1 was operating at approximately 40 mph when operator stated it suddenly took a hard turn to the left for an unknown reason.  The vessel then barrel rolled ejecting both passengers.  Both passengers were rescued by witness #1 and taken aboard his boat.  Both victims complained of various injuries and were taken to the Sheriff's Marine Division and turned over to Harrison Twp EMS and transported to Maclaren Macomb Hospital for further treatment.  Michigan Marine Salvage removed the vessel from the water.