DETAIL DRAWINGS.--Detail drawings are
prints of single parts. The drawings provide an exact
description of the part's shape, size, material,
shop operations, and other special requirements. Detail
drawings often show where dimensions would be
located on a part, as shown in figure 13-12.
ASSEMBLY PRINTS.--An assembly print (fig.
13-13) shows a unit either completely assembled or
unassembled, usually without dimensions. One or
Figure 13-10.--Phantom view showing alternate position.
more views of the assembled unit may be provided.
Letters or numbers are used to identify parts on the print
that correspond to various detailed drawings. Sectional
views are generally used to show the assembled units.
Exploded views show the exact location of each part
and the sequence of assembly.
STRUCTURAL METAL SHAPES
Your work will require you to use some standard
structural shapes rolled from steel and aluminum in a
wide variety of cross-sectional shapes and sizes. Steel
shapes are commonly used in the construction of ships'
hulls, superstructures, and small crafts. Newer ships
use extensive amounts of aluminum in the construction
of their superstructures, and most small craft's hulls and
Figure 13-11.--Exploded view.
superstructure are constructed of aluminum. This
section will discuss the common shapes, sizes, types,
Detail Drawings and Assembly Prints
and uses of common metal shapes and the different
Detail drawings and assembly prints are additional
marking systems used to identify these structures.
guides for repairmen during the fabrication or assembly
Angles, bars, rods, flats, and plate will also be discussed
in this section.
of a part.
Figure 13-12.--Detail drawings.