Boatbuilding -- Juvenile fiction; Boats and boating -- Juvenile fiction
While the boys were getting over the excitement attending the vote on
the name of the unbuilt schooner, Captain Gildrock moved the table on
which the model of the craft stood to the front of the platform, where
all could see it. It was a very graceful form, and the nautical boys
were sure that the schooner would be a fast sailer.
"I told you before," said the principal, "that this model was
constructed on a new plan; but I have since learned that the idea is not
as original as I supposed it was, and that boats have been built by this
method. I supposed I should be the first to introduce it, but I find I
am not, though the model-maker had never made one before.
"The plans are drawn and the model made on the scale of one inch to a
foot. Whatever measures an inch in the plan or model measures a foot in
the boat. Every stick in the craft will therefore be twelve times the
size it is in this model. The Lily will have a beam of thirteen feet,
which is a little more than one-third of the length.
"This model is made of soft pine and mahogany. The ribs are to be
twenty-one inches from the centre of one to the centre of the next one.
What looks to you like the space between the timbers, or ribs, is pine.
The mahogany strips, which are comparatively narrow, represent the
timbers. The pieces are transverse sections of the hull, made separately
and put together.
"This is the stem," continued the principal, detaching the piece from
the model. "A model of it is to be made of soft wood, enlarged to twelve
times the size of this piece. Removing a piece of the pine, we come to a
mahogany section. As the bow is round, these sections radiate from a
shorter line on the keel than the horizontal line above it on the deck
would be."
The captain held up one of these diagonal sections, the top or deck part
of which was in the shape of a triangle with a very acute angle. The
parts were in pairs, one belonging on each side of the bows.
"The outer edge of this half section gives the shape of the bow where
this piece belongs. If you lay it on a smooth board, you can mark from
it the exact curve of the timber which is to go where this piece is
taken out. It must be enlarged to twelve times the size of the section.
Of course the outer surface of the section only is of any use to you;
but having obtained the exact shape of the outside, the rib may be made
of any width and thickness we wish."
The principal removed several of the diagonal half sections, all of
which were to be treated like the first one. At the widest part of the
model he came to pieces which were of uniform thickness. These were also
in pairs, separated on the vertical plane above the keel. The lines of
the outer surface in these half sections were to be transferred and
enlarged as before, and the mould or pattern was to be made from them.
Public-domain text, read in full here on John Shaqi.
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