Harper's boating book for boys; a guide to motor boating, sailing, canoeing and rowing by Davis Charles G. (Charles Gerard) 1870-1959

Author:Davis, Charles G. (Charles Gerard), 1870-1959
Language: eng
Format: epub, pdf
Tags: Boats and boating
Publisher: New York, London : Harper & Brothers
Published: 1912-03-25T05:00:00+00:00

SIMPLE TYPES OF BOATS

A FAMILY CRUISER

the stern end is rounded in so abruptly that the water does not have an easy curve to flow into at the stern. Boats which are crowded in this manner raise the bows up and drag their sterns down low. The force that makes the boat go is the push of the propeller against the water. The propeller-blades are set at an angle just like the thread on a screw, but whereas the latter will advance one thread ahead into wood for every complete turn, the propeller, turning in water instead of wood, does not go ahead the full pitch of the propeller - blades, because the water gives way to a certain extent. It "slips," so to speak, and this loss is called the "slip" of the propeller. Suppose, for example, the angle of a certain boat's propeller is such that if it

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