. Treatise on marine and naval architecture, or, Theory and practice blended in ship building. Illustrated with more than 50 engravings . —4°= 86°X. 0075 =,645 160 X 35 = 5600 x 14 = 78400 x, 645 = 50568 -H 35 = 1444 capacity in tons. The principal, and perhaps the onlydifficulty in applying this rule as astandard of measurement, is its liabilityto evasion, (which is the most objec-tionable feature in the present law.)The load-line could not be marked aproportionate distance from the base-line or from the plank-shear, withoutexposing the law Jo the same amountof infractions the present one is.
. Treatise on marine and naval architecture, or, Theory and practice blended in ship building. Illustrated with more than 50 engravings . —4°= 86°X. 0075 =,645 160 X 35 = 5600 x 14 = 78400 x, 645 = 50568 -H 35 = 1444 capacity in tons. The principal, and perhaps the onlydifficulty in applying this rule as astandard of measurement, is its liabilityto evasion, (which is the most objec-tionable feature in the present law.)The load-line could not be marked aproportionate distance from the base-line or from the plank-shear, withoutexposing the law Jo the same amountof infractions the present one is. But,as a ready rule for general referenceand approximating the truth, rule is doubtless without a rival. After the actual displacementhas been found, a very convenientmethod of obtaining the capacity willbe found in the following: Multiplythe length between perpendiculars bythe breadth, that product by the depthfrom base to load-line, this last pro-duct divided into the whole displace-ment, and the quotient w ill furnish theexponent of the ratio of capacity, andwill apply equally well to all descrip-tions of MARINE AND NAVAL ARCHITECTURE 47 CHAPTER II. An Exposition of the Tonnage Laws—Their Deleterious Effects—Necessity of Change—Tonnage Laws of other Nations—Laws of Resistance—Laws of Propulsion. Having endeavored to show that re-liable proportions cannot be furnishedapart from mathematical demonstra-tion, we shall now proceed to show thedeleterious effects of the Tonnage Lawsupon the commerce of the UnitedStates. It has been a matter of nolittle surprise to scientific men in theold world, that a country like oursshould continue in force laws so de-trimental to her commercial interestsas the existing tonnage laws haveproved to be ; nor is the surprise con-fined to the old world: our ship-build-ers have long witnessed its banefuleffects, and nothing but an indomita-ble energy has saved us from defeat inour race with England for the ascen-dency
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Keywords: ., bo, bookcentury1800, bookdecade1850, booksubjectnavalarchitecture
