BULKHEADS

In Figure 41 (i), A is the stringer plate lying on beam E, with its
connection to the shell strake B by means of the fore-and-aft angle bar
Oj. The frame C and the reversed frame D are cut at the beam and
continued again above the deck as shown. The bracket d^ is riveted to
the frame and connected to the stringer plate by means of the short
double angles d2. The strake B, the continuous fore-and-aft angle? a^,
and the double angles d2 are shown in plan looking down on beam E
shown dotted in figure (li). See also figure 6, page 601.

Sometimes the frame is continued in order to maintain continuity
of strength and rigidity. The edge of the stringer plate in this case is
notched out in the way of each frame to allow the plate to bear against
the shell plating. The angle bar connecting the edge of the stringer

Fig. 42.—Watertight Flat, Continuous Frames.
plate to the strake of shell plating is made in short lengths to tit between
the frames, the ends of the bar being bent, joggled and shaped to fit
close to the frame bars and to extend inwards a little beyond the toe of
the frame. The vertical flanges at the ends of the short angles meet
each other and are riveted together. In Figure 42, A indicates the frame,
B and B the intercostal angle bars fitted into the bosom of the frames;
the horizontal flange is riveted to the stringer plate and the vertical
flange to the shell plating, the end vertical flanges being riveted together.
Bulkheads are vertical partitions arranged transversely or longitudin-
ally to form walls to subdivide the ship into convenient seetions for
stores, living Accommodation, cargo, etc.
Transverse Watertight Bulkheads, however, enter largely into the
main structure of the vessel, their principal function being to impart