Abstract: The present invention relates to a device at a trailer, especially a boat trailer, which includes a chassis supported by wheels and a coupling device in the front for connecting the trailer to a towing vehicle. A two-armed lever consists of arms which form an angle with each other and is pivoted in an axis of rotation which is oriented transversely at the back of the trailer. The first arm of the lever, which mainly points forward from the axis of rotation has a length that exceeds or falls below the length of the other arm of the lever. The two lever-arms comprise parallel arm elements, whose ends are connected to the ends of the axis of rotation and which at their outer ends are lined by transversal beams. A winch tower with a winch is provided at the front end of the trailer. The wire of the winch is adapted to run over the outer ends of the lever-arms and in its end is provided with lifting devices for the objects.