Marinco Pigtail Adapters 15 Amp 125V Straight Blade with Locking Screw Dock Side/Male Plug, 30 Amp 125V Locking with Sealing Collar System Boat Side/Female Connector Allows you to connect from one dockside receptacle (or other power source receptacle) to one boatside inlet or equipment of a different power configuration Fully molded and equipped with the Marinco unique sealing collar (where indicated) and covers for use in wet locations. LED Power Indicator Contoured Grip. Thumbprint Ground Blade Locator