Marinco Y Shore Power Adapter 2 50 A Boat to 50A Dock The Marinco Y Shore Power Adapter 2 50 A Boat to 50A Dock allows you to split one dock side receptacle between two boat inlets of similar or different power configurations. Fully molded and quipped with Marincos sealing collar and covers for use in wet marine locations. Product Features Equipped with covers and sealing collarswhere indicated. For use in wet locations. Boat side female connector atttaches to boat inlet or cordset. Dock Side ma