Maryland Department of Natural Resources police say the accident happened around noon yesterday in front of a restaurant near Fairview Beach, Virginia.
The boat involved in the crash was capable of reaching speeds up to 190 mph. Video of the accident posted on a boating website shows the boat going airborne and flipping end over end.
The crash occurred during an event where boats can have their speed clocked by a radar gun. Police say the boat driver was 49-year-old James Melley of Buford, Georgia, and the throttle man was 61-year-old Garth Tagge of Atlanta.