The Elememts of Naval Architecture, Or, A Practical Treatise on Ship-buildingA. Millar, 1764 - 117 من الصفحات |
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abaft afore angle of incidence arch axis becauſe bevelling body Bouguer builders cafe center of gravity confidered contained betwixt cubick curve deck defcribe diagonal diameter dimenfions diminiſhed direction diſtance betwixt divide draught draw the line equal extreme breadth fails faſhion piece fays fecond fection feet fhall fhip fhip's fhock fhould fimilar find the center firft firſt floor timber fluid fmall folid fome fore fquare frigate ftem ftrait lines ftrike fuch fufficient fuppofe furface greateſt guns half horizontal plane impulfion inches interfect keel leaft lefs length likewife mafts maſt metacenter method middle line midſhip frame momenta moſt muft multiplied muſt neceffary obferved oblique occafion pafs parallel perpendicular plane of elevation poffible pofition poft ports pounds preffure proportion quarter reafon refiftance refpect reft reprefent ribband rifing ſhall ſhe ſhip thefe theſe thoſe thro triangle uſe velocity vertical water line weight whole wind yard
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الصفحة 61 - IN any triangle ABC, whofe two fides are AB, AC, and bafe BC ; the rectangle contained by half the perimeter, and the excefs of it above the bafe BC, is to the rectangle contained by the ftraight lines, by which the half of the perimeter exceeds the other two fides AB, AC, as the fquare of the radius is to the fquare of the tangent of half the angle BAC oppofite to the bafe. Let the angles BAC, ABC be bifected by the ftraight lines AG, BG ; and, producing the fide AB, let the exterior angle CBH be...
الصفحة 9 - The fafhion piece, of which there is one on each fide : Their heels are faftened to the ftern poft at the height of the floor ribbands, and their heads are faftened to the wing tranfom. XIV. / T. A floor timber. It is laid acrofs the keel, to which it is faftened by a bolt through the middle.
الصفحة 47 - It is plain, that a long floor timber, and not of a great rising; a very full midship frame, and low tuck with light upper works, will make a ship carry her guns high. To make a Ship go smoothly through the Water without pitching hard. A long keel, a long floor, not to rise too high afore and abaft, the area or space contained in the fore body, duly proportioned...
الصفحة 48 - ... methods, which to the great reproach of the art, are but too common, that have produced all thefe pretended rules of proportion, all thefe methods of defcribing the midfhip frame, and forming the reft of the timbers, which every builder endeavours if poflible to conceal and keep wholly in his own family. How low and mean is this ? it is as if a great architect mould endeavour to conceal the proportions of the different orders of architecture, where-?
الصفحة 47 - ... go fmoothly through the water. To make a Ship keep a good Wind. A good length by the keel, not too broad, but pretty deep in the hold, which will occafion her to have a fhort floor timber, and great rifing. As fuch a...
الصفحة 56 - IX. fore*; but as every part has its own peculiar velocity, fo it makes its effort fingly by itfelf, and> being eafily put in motion, it will be as eafily turned out of its direction, the parts being only retained together by the weight of thole that come next them.
الصفحة 18 - There is in the after-body a frame to balance that of the loof in the fore-body ; thefe two are of equal breadth in fome points, and this will occafion the center of gravity of that part contained betwixt thefe two frames to be near the plane of the midfhip frame, which will keep the fore part and after part upon a balance. It muft be as far abaft the middle of the line CD as that of the loof is before it. The frames in the after-body are the fame...
الصفحة 43 - ... pieces on each fide are not in one plane, as all the reft of the frames are, we fhall be much deceived, if we imagine that the fafhion piece laid down in the plain of projection, will give the true form of that which is to be put in the fhip. We muft therefore lay it down upon another plane, and, to avoid confufion, we fhall feparate it from the plane of projection. Note, T'hefafiion peice, mention...