Abstract: Frame for carrying a cover for a boat. The frame consists of a number of longitudinal beams which are hingeably coupled to one another to follow the shape of the boat. Transverse beam structures extend between opposing longitudinal beams and each transverse beam structure consists of a number of transverse beams which are hingeably connected to one another. At a hinge location not adjoining the longitudinal beams, ridge beams extend for carrying the cover. Preferably, at least some of the hinges are configured in such a way that, in the desired hinge position, this hinge position can be fixed or prestress can be applied thereto. A carrier structure is present to support the transverse beam structure and more particularly an upright thereof. A cover structure according to the invention comprises the frame and an associated cover and also a tarpaulin cover.