Sea-Doo sport boats employ an internal impeller rather than an external propeller. That means no sharp edges or hard metal to threaten swimmers, skiers, or wakeboarders. It also allows the swim platform to be at water level, adding further safety and convenience for you and your family. Another benefit of the direct drive propulsion system is the use of fewer moving parts, which translates into increased reliability. You spend more time enjoying the water, less at the dealer for maintenance.