Construction bulkhead
Structural ribs are part of the outline, i.e. the graphic representation of a boat shape. They correspond to cross sections through the fuselage.
The term frame comes from shipbuilding. It describes a load-bearing component for reinforcing the hull of boats.
With the help of the construction frames, the designer can develop the ship and plan further. They are drawn in the line plan together with water lines, sections and possibly sides that together describe the shape of the hull.
The bulkhead at the widest point of the fuselage is called the main bulkhead, the term being used for both the graphic representation and the component. Its shape allows conclusions to be drawn about the later characteristics of the ship such as B. stability or speed. In this way, boat hulls can be classified according to the shape of the frames. A distinction is made among other things with knickspant , round bilge and S-shaped rib .
The position and the number of structural frames do not have to match that of the frames in the finished ship, only the main frame is usually placed in the same place during design and construction. A few structural frames are sufficient, especially for simple boat shapes. The final placement of the frames takes place on the cord floor .
Putting up wooden frames for the construction is such that its in the front part of the ship back are edge on the marked as Spantposition line at the rear of the front edge. This edge on the frame position is called the mall edge. In this way you can nestle the ribs (i.e. plane on the outside diagonally so that the planks are flat and not just on one edge) without changing the previously determined shape of the boat.