A boat including a hull with a cockpit section, and a rear cabin section normally concealed by a horizontally extending cushioned deck element located adjacent the stern. The deck element is hinged along its rear edge so as to be elevatable to expose a sunken floor wherein sink and toilet facilities may be provided. An enclosure for the rear cabin area may be deployed to provide privacy for changing clothes or using the toilet. In combination with the sunken floor, the height of the enclosure permits a person to stand erect and move about freely. A portable toilet may be stored under a captain's chair immediately in front of the rear cabin area and slid rearwardly for use in the rear cabin area as needed.