Engineering Wonders of the World
Volume I
Forfatter: Archibald Williams
År: 1945
Serie: Engineering Wonders of the World
Forlag: Thomas Nelson and Sons
Sted: London, Edinburgh, Dublin and New York
Sider: 456
UDK: 600 eng - gl.
Volume I with 520 Illustrations, Maps and Diagrams
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DESIGNING A SHIP
BY ALBERT G. HOOD,
Editor of “The Shipbuilder.”
Fig. 1.-A MODEL OF A SHIP BEING CUT OUT OF PARAFFIN WAX BY A MACHINE FURNISHED
WITH REVOLVING CUTTERS, WHICH MOVE TOWARDS OR AWAY FROM THE CENTRE LINE OF
THE MODEL IN OBEDIENCE TO THE MOVEMENTS OF A GUIDE DRAWN BY THE WORKMAN
ALONG THE LINES OF THE PAPER PLAN ON THE TABLE AT THE SIDE.
THE naval architect, when designing a
new ship, must give careful con-
sideration to a number of factors
mutually dependent upon one another. These
factors are the same, be the vessel a cargo
“ tramp,” an Atlantic liner, or
a battleship ; but they vary
Design *n re^a^ive importance accord-
ing to the particular purpose
for which the ship is intended. By the
fundamental law of hydrostatics known as
the principle of Archimedes, the volume of
water displaced by the under-water portion
of a ship (or, as it is termed, her “ displace-
ment ”) has a weight equal to that of the
ship herself, together with the “ deadweight ”
being carried. By the expression “ dead-
weight ” is meant the fuel, cargo, stores, and
other movable weights on board which do
not form part of the vessel or her equipment.
With the necessary displacement the naval
architect, in designing a vessel, must also
secure a good “ freeboard ”—that is, height
of the vessel’s side out of the water—in order