The Sea Island One-Design, or SIOD is a wood-constructed sailing skiff that features a wide and flat profile. The boat was first designed to sail in the and eventually spurred other local yacht clubs to build their own and to establish an invitational regatta of their own. It has a mostly flat deck that only differs in the middle where it tapers downwards towards the centerboard. The SIOD is known not for its speed but for its simple boxy design and its flat-bottom hull that characterizes it as strictly a day sailer built for the races. It is usually sailed by three people who fill one of which jobs: skipper (steers), main sail, and jib position. This boat is native to the waterways in and around Charleston, South Carolina where it has been the main event in local regattas since its desig