Our company built and delivered the reefer/car-carrier (RCC) "SUNBELT SPIRIT" to Great American Lines, Inc. in March 2002. The RCC is a unique ocean car-carrier provided with the facility as a reefer. This allows the vessel to carry cars on an outward voyage and reefer cargo on an inward voyage, eliminating an unprofitable ballast voyage. "SUNBELT SPIRIT" is the world's largest and fastest reefer/car-carrier and is now operated for the North Pacific service demonstrating the designed performance. This report presents the features of its basic design.