point 10. Thus, by closely examining
Fig. 8 the shape of the entire hull can be seen.

[Illustration: FIG. 10]

If pieces of wire could be used to form the lines of the hull at the
various sections, it would appear as shown in Fig. 10 when assembled.

Notice that in Fig. 8 there is a load water-line, which the vessel
sinks to when loaded, and the second and first load water-line, which
the vessel sinks to when only partially loaded or when carrying no load
aside from its regular necessary equipment. The keel line of the boat is
the line that runs along the bottom from bow to stern. (The bow of the
boat is the front and the stern the back.)

Motor-boating and marine magazines often publish the lines of different
boats, and if the young boat-builder understands how to read boat
drawings he will be able to make a model of any boat that is so
described.

Directions will now be given regarding the method of producing a
boat-hull similar to the lines shown in Figs. 7 and 8, by the built-up
method of construction.

First, it will be necessary to procure the lumber. Several clean white
pine boards will be very suitable to work with, and will not require
much skill in handling. Let us assume that the boat-hull is to measure
22 inches in length, with a depth of 4 inches. The beam, which is the
width of the boat at its widest point, will be 5 inches. (It will be
well to remember what the term "beam" means, since the term will be
used constantly throughout the book.)

On a piece of heavy wrapping-paper draw the deck plan full size, that
is, 22 inches long by 5 inches at its widest point. Next cut out along
the pencil line with a pair of shears. Now lay the paper outline on a
plank and mark out the pattern on the wood. Repeat this process with
three more planks. When this is done, cut out the boards with a keyhole
saw.

[Illustration: FIG. 11]

After the boards are cut out mark them as shown in Fig. 11. The space
marked out on the board must be sawed out in two of the boards, to form
the inside of the hull, if the boat is to carry some form of power, such
as a battery-motor, or steam-engine. After the lines are marked out,
make a hole with a 3/4-inch bit, as shown in Fig. 12. Insert the point of
the keyhole saw in one of these holes to start it and cut out the
piece. Treat the second board in the same way. The third board must
have a smaller portion cut out of the center, owing to the fact that
this board is nearer the b