Marinco 50 Amp Shore Power Pigtail Adapter The Marinco Pigtail Shore Power Adapter 30A Boat to 50A Dock allows you to connect from one dockside receptacle to one boat side inlet or equipment of a different power configuration. Fully molded and equipped with Marincos sealing collar and covers for use in wet marine environments. Features These adapters are equipped with covers and sealing collarswhere indicated, and are for use in wet locations. Marincos unique sealing collar system with cover joi