Marinco EEL Pigtail Shore Power Adapter 50A Dock to 30A Boat The Marinco EEL Pigtail Adapter allows you to connect from one dockside receptacle to one boatside inlet or equipment. This adapter is fully molded and equipped with Marincos unique sealing collar and covers for use in wet locations. The EEL is a patented, industry-first, jaw-clamp design that provides one-handed operation and a secure waterproof seal. This eliminates the use for a locking ring. The EEL connection is built for the hars