sentences:  The first prototype was up and running by 1965.This fixed-handlepole, stand-up design was constructed out of aluminum and powered by a West Bend two-stroke engine driving a Berkeley jet pump.A second prototype, built in 1966, caught the attention of what was, at the time, primarily a snow-mobile manufacturer, Bombardier Recreational Products; and prompted the licensing of Jacobson's patents for the sit-down version of his jet-propelled personal watercraft that would become the Sea-Doo.