Assembly drawings are production drawings, produced in the detail design phase of the design spiral, which describe the manufacture of assemblies (a combination of any two parts). Some include parts drawings (i.e., nesting of sheets, or cutting plans of scallops, etc.) as assembly drawings as well, or they may be combined in one sheet/package. Assembly drawings are most often produced by shipyards, however they may be included in a comprehensive design package or produced by consultation firm (i.e., Genoa).
These drawings are then used within shipyards or metal/machine shops to create individual components, such as machinery seats or built sections of structure. The size of drawing is often of a smaller size that is more suitable for handling in a shop, such as 11"x17" or 8.5"x11".