Model of the Stern of A Steam Battery. Semi-model of the stern of a steam battery on a stack, on a base board. The skin of the model has been omitted, inside and outside the construction can be seen. It proposes a converted linen ship: the number of decks has been reduced to the lower three, on the upper deck an superstructure with a dome is set, the skin above the water line is made vertically, with the result that the elliptical stern has changed in a peak hole . The stern has been replaced by a vertical stern, with a screw window behind it and a stirring. The rudder is kept entirely below the waterline and has a roaring wall: the chain of the quadrant is attached to a rod, which ranks the trunk through the skin and is linked to a steering quadrant. The dome is fourteen-sided, each side with a shooting hole, and has a flat top with a square hole; Inside, it is circular and equipped with rails for armored plates with which the shooting holes can be closed. Scale 1:25 (Scale by model).