2008 Yamaha SX210 21,With a wide, spacious bow and an inviting interior, this 21-foot boat leaves plenty of room for everything except improvement. Offering an abundance of space with limited investment, the SX210 was designed with ample room for nine and extensive storage to stow everything required for a day in the sun. Revered as a quintessential Yamaha, this boat feels bigger than many larger stern-drive boats and is powered by Twin Yamaha Marine engines to make certain that its just as fast, too.