SHIP-BUILDING. 



Transfer from the (hcer-plan, Plate I., the heights of the 

 ventres of the floor-fweeps, lower and upper heights of 

 breadth, top timber-hne, and top of the fide, as before. 



Transfer from the half-breadth plan, Plate 1., the half- 

 Lreadths of the floor-fweeps, main half-breadth, and top- 

 timber half-breadths. But to end the main-breadth, and 

 likewife the top-timber half-breadth in the half-brcadtli plan. 

 Jig. 2, the fide-counter-timbers mull be laid off in the fiiecr- 

 plan and body-plan, and where they intcrfeCf the fide- 

 counter-tiraber in the flieer-plan, mull be fquared down to 

 the half-breadth plan. 



In the plan of the after-body on the mould-loft-floor, its 

 middle line is made by the fide-line of the fore-body, confe- 

 quently the bodies at the lower part crofs each oiher. This 

 would have appeared very confufed in the plate, but it 

 is always a maxim in laying-ofl on the floor to ufe as few 

 lines as pollible. 



The lower height of breadth and fweeps, and the centres 

 of the floor-fweeps in the after-body, _/?^. 5, may all be ob- 

 tained exattly in the fame manner as diredled for the fore- 

 body. The diagonals Ibuck in, and the feveral half-breadths 

 of the timbers fet ofl thereon, form the after body-plan, 

 Plate I. Thofe timbers which come near the after-end ot 

 the keel, mufl: be ended by fetting off the half-thicknefs 

 of the keel, as far as it tapers from the Itern-poft in the half- 

 breadth plan, Jig. 2 ; and within the half-thicknefs of the 

 keel, fet off^ thethicknefs of the bottom plank. Then take 

 off the half-breadth of each timber to the infide of the 

 rabbet, and fet it off^ on the bafe line from the middle line of 

 the body-plan, Jig. 5, which is the true ending of every 

 timber at the upper edge of the keel. 



The top-fide of the after-body. Jig. 5, is laid off in the 

 fame manner as diretied for the fore-body at dead-flat, even 

 to the after-timber. 



When the bodies are thus far laid ofl on the floor, it is 

 ufual to make the moulds, and take the bevellings of all the 

 timbers in the fquare body ; that is, from O forward to 28 

 abaft. 



Moulds Jor the Timbers in the Square Bady. 



The moulds for the midfliip floors are generally made firft 

 in the following manner : take fir-board, about three- 

 quarters of an inch thick, and fay the outer edge to the 

 floor-timber dead-flat, in the body-plan,^. 3, from the 

 keel to the floor-head, and make it of a parallel width, about 

 four inches. Provide another board, and fay it to the 

 foremoft. fquare floor O, from the head to the iides of the 

 keel, and make it of the fame width. Then tack them both 

 down ill tlieir places, and nail a piece of board made pa- 

 rallel to the half-breadth of tiie keel, its midlhip edge well 

 with the middle line, and lower end cut iquarc, and be well 

 with the bafe line, cr upper edge of the keel : the upper 

 end is to extend a few inches above the cutting-down of O. 

 Now nail a ftraight batten, about four inches wide, at the 

 floor-head, from dead-flat to O ; the upper edge well with 

 the direftion of the floor-head C. Let battens of the fame 

 width be nailed acrols, with their upper edges kept well 

 witli the floor-ribband B, and one at the lower diagonal A, 

 and as many between as may be thought neceffary. Let 

 thefe battens be one inch narrower than the others, which 

 will diltinguilh them, as the former fliew the proper (lations 

 of the diagonals, and likewife the direction of the floor- 

 heads. Then, upon the crofs- battens mull be marked the 

 intermediate floors from dead-flat to O. There muft be 

 outfidc pieces and battens put together, exaft ly in the fame 

 manner, for the other fide ; and the lines for the moulding 

 edges of the floors corredly transferred to the other fide. 



Thefe two moulds may then be united together at the 

 middle line by hinges, fo as to fliut together, and be more 

 handy for ufe. 



The cutting-down line being transferred from the flieer- 

 plan,^^. I, to the floor, as at M, Plate VIL Jig. I, take 

 its height above the upper edge of the keel at every floor 

 from dead-flat to O, and fet thum up the middle line of the 

 mould from its lower edge, and fquare them acrofs, marking 

 each floor's name refpecfively. Fix one or two battens ho- 

 rizontally acrofs, from the cutting-down board in the middle 

 to the foremolt floor, as braces, to preferve the mould from 

 racking. The mould is now finiflied for moulding the floors 

 of the fore-body thus far. 



Now lay the blank fide of the mould upwards in the after- 

 body. Jig. 5, and mark thereon, as before, the moulding 

 edges uf as many of the after-floors from dead-flat as the 

 mould will contain, and the heights of their cutting-down, 

 which will be found to extend to 21. 



Then to the floors from 22 to the after-fquare floor 28, 

 another fimilar mould mud be made. 



The lower futtock-moulds are beft made of feafoned board 

 of the above thicknefs, the outer edge being fayed to the 

 frame-fiittoc.k, and the infide edge to the adjoining fiUing, 

 from a few inches within the fide of the keel to the firll 

 futtock-head. Then when the mould is in its place, mark 

 thereon the fide of the keel, lower diagonal A, floor- 

 ribband B, firit futtock-ribband D, and firlt futtock-head E ; 

 or a fliorter way, the diagonals numerically, ift: diag. zddiag. 

 &c. 



But if faving of ftuff and time be confidered as an objedl, 

 make the edges of the mould fay to the two adjoining frames, 

 and fet down fpilings to the correfponding fillings at every 

 diagonal, and alio at the head and heel. 



The fecond futtock-moulds may be next made fimilar to 

 the above, from the floor-head to the fecond futtock-head, 

 marking thereon the heel C, firft futtock-ribband D, firlt 

 futtock-head E, fecond futtock-ribband F, and fecond 

 futtock-head G. 



The third futtock-moulds may be next made in the fame 

 manner from the firll futtock-head to the fecond futtock- 

 head, marking thereon the heel E, fecond futtock-ribband 

 F, fecond futtock-head G, third futtock-ribband H, and 

 third futtock-head I. 



Tile fourth futtock-moulds differing in their fhape, and 

 being much longer than the others, the beft and rcadieft 

 method is to fay this mould to dead-flat, from the fecond 

 futtock-head to the top of the fide, and two or three feel 

 longer, as the iieads run higher afore and abaft dead-flat. 

 The infide of the mould towards the upper part may be made 

 to the icantling line, but at the heel, and a few feet above it, 

 fliould be made as broad as pollible; fothat by this one mould 

 may be moulded nearly all the fourth futtocks in the fore- 

 body. Lay the mould in its place at dead-flat, and r.ark 

 thereon the heel G, third futtock-ribband H, third futtock- 

 head I, lower and upper heights of breadths K and L, gun- 

 deck poit-fiU M, ujiper deck port-fiU N, top timber-line O, 

 and top-fide P. 



Next place the upper part of this mould to the foremoft 

 fourth fultock, O, of the Iquarc body, and it will be found 

 to fay from the inaiu-breadth upwards (as it will likewife 

 fay to all the timbers between O and dead-flat, m confe- 

 qucBce of the radii of the upper-breadth Iweeps being all 

 of one length) ; then, while the mould is in this pofition, if 

 it covers that part of the timber from the mam-breadth 

 downwards to the fourth futtock-heel, the fourth fntlock 

 of this timber may be moulded by this mould, as it may then 

 be conlequently marked on it ; but if not, then the mould 



mu 11 



