Batteries are installed below the deck hatches to keep weight low and free up storage space in transom - house bank shown. Solenoid operated battery switches are remotely controlled from the helm station. Truss mounted to underside of deck hatch improves seal by preventing ends of hatch from springing upwards. The truss is designed to bend the ends of the hatch downward about 1/16" which flattens out when dogged closed.