Transactions of the Society of Naval Architects and Marine Engineers Volume 16.cSociety Of Naval Engineers
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Author: Society Of Naval Engineers
Page Count: 120 pages
Published Date: 13 Sep 2013
Publisher: Rarebooksclub.com
Publication Country: United States
Language: English
ISBN: 9781230055572
File Name: Transactions.of.the.Society.of.Naval.Architects.and.Marine.Engineers.Volume.16.pdf
Download Link: Transactions of the Society of Naval Architects and Marine Engineers Volume 16
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ...the finer tools of the profession, and the procedure in general is the simple one of pumping light on the side to be raised and admitting water to the opposite compartments until the desired degree of heel is attained. Foreseeing such methods the prime aim of the builder should be to so design each member that it may safely bear the maximum load to which it may possibly be subjected. The curves for indicating the depth of contained water for each draught of the dock are especially interesting. In designing a dock the maximum head of water to which skin plating and W. T. bulkheads will be subjected are first calculated, and then the depth of contained water for various draught lines, both with and without ship loads, are plotted and curves traced. The practical value of such curves, however, is not great, since the levels of the water in the various compartments are seldom if ever the same at any time throughout the career of a dock. With a ship load it is custormary for the intelligent dock-master to regulate the pumping by the character of his ship. He will endeavor to carry a certain excess of water in the forward and after compartments when docking a short and heavy ship and will always, even when operating the dock empty, carry excess water in his side walls to enable him to control trim. This feature of dock operation would justify a doubt as to the wisdom of increasing the depth of the water-tight compartments of side walls to give storage space. As a matter of fact certain types of docks maintain the two center compartments of pontoons water-tight and dry in order to decrease the pumping head. The method proposed for determining stability, while ingenious, does not appear to offer advantages over the customary method of tabulating...
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