448 NICHOLAS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE

plate C, and the other edge on top of the left hand plate A. This
necessitates the fitting of a " tapered " liner to fill the triangular
space between the flange of the beam and the under side of plate B.
The sight edges in this system all face the one way, and it has an
advantage over the raised and sunken strakes for deck plating, as
water drains readily to the scuppers as there is no sunken strake for
it to lodge in.

The iraised and sunken, or outer and inner, system of plating
with a parallel liner below the raised strake D is also shown.

Fig. 34.—A Stealer.

A Stealer strake is introduced in the shell and deck platings
towards the ends of the vessel when, owing to the reduced breadth of
the plating, two strakes may conveniently be merged into one, the
single strake being called a stealer, as each time it is fitted the
number of strakes is reduced by one.

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Fig. 35.—Angle and Beam Sections,
Figure 35 illustrates the rolled sections most commonly used in
ship construction. A, B, C and D are rolled sections, that is to say,
they are made in one piece ; Ey Ft and 0 are built sections.
A is a bulb angle used for frames and beams; B is a channel
section bar ; 0 is a light section used as stiffenexs on bulkheads, etc.;