Draw the ribband line at the Moor head, in the half breadth plan, by taking these several half breadths from the middle line of the body plan, in the direction of the ribband line ; thus we shall find e, 16 feet ; F, 15 feet 1 inch; 1{, 13 feet 11 inches; 0,10 feet 4 inches; and 8, 8 feet 6inches ; in the fore body; and 6, 15 feet 9 inches; 12, 15 feet 1 inch ; 18, 14 feet ; 24, 11 feet 7 inches ; 30,7 feet 6 inches ; and 36, 1 foot 11* inches. Then set up these several half breadths on their cor responding timbers from the middle line in the half breadth plan ; but what their endings differ from the water lines we will next explain. Take the height where the diagonal line, or ribband, cuts the half thickness of the stem in the body plan, and transfer that height to inter sect the fore side of the rabbit of the stem in the sheer plan, from whence square down the fore side of the rabbit to the middle line in the half breadth plan, and then square up a line; then take the half thickness of the stem from the mid. dle line in the body plan, in the direction of the ribband line, and set it up from the middle line in the half breadth plan on the line last drawn ; then with com passes take the breadth of the rabbit in the direction of the ribband line, in the body plan, and sweep an arch from the thickness of the stem, in the half breadth plan, and the back of the arch will be its ending forward; the ending abaft is so nearly the same, only that the heights are taken up the half thickness of the post in the body plan, and trans ferred to the aft side of the rabbit of the post in the sheer plan ; proceed as be fore ; now draw a curve line through all the half breadths, and intersecting the back of each arch, the ribband line at the Boor head will be represented in the half breadth plan. In the same manner all the ribband lines may be represented. These lines will also prove the fairness of the bodies, but horizontal water lines should always have the preference, as they cut the body in a more acute direc tion, and its unfairness would be more readily discovered, for it is possible to have fair ribband lines to appearance, and the body itself remain unfair.
Hitherto the timbers have only been considered as perpendicular to the upper side of the keel, and square from the plane of elevation, or plan, and hence called square timbers. Butforward and aft, in the turn of the body, they are canted, that is, they incline aft towards tbe middle line in the fore body, and forward in the after body, in the half breadthplae, or form obtuse angles to the plane of ele vation ; the utility of this is to strsigthen the form of the timbers, and reduce the bevellings, both highly essential in the conversion. Now to determine the situ ation of the cant timbers in the fore body, the foremost cant timber, which is Y, should be so canted as to stand as square with the main breadth line as possible, therefore it will be on that line before tim ber 8, 15 feet 2 inches on a straight line, and at the side of the deadwood, which is 8 inches from, and parallel to, the middle line of the half breadth plan, 4 feet 10 in ches before 8; then the after cant timber, which is P, is before 0 at the main breadth, 2 feet 9 inches, and at the side of the deadwood, 2 feet 4 inches ; draw straight lines to those spots, and the cant of the foremost cant timber Y, and the after one P, will be represented on the half breadth plan, the intermediate ones, which are 7, may be drawn by equally li viding them at the deadwood, between those already drawn, to where they snail intersect their respective square timbers, at the main breadth line, as here they re main at the same station, unless they are moved to make the side of a port.
The cant timbers in the after body may next be described in the half breadth plan, in order to which the cant of the fashion piece, or after timber, must first be deter mined, observing, as in the fore body, to let it cant as nearly as possible square from the body at that place. Now, as the
fashion-piece comes against the fore side of the transoms, the wing ;ransoms must be drawn in the half breadth plan; thus set off from the middle line, in the half breadth plan at timber 36, 16 feet 6 inch es, the half breadth of the wing transom, from thence level out a line aft, then, from the sheer plan, square down the aft side of the wing transom at the post to the middle line in the half breadth plan, and at the side, on to the line last levelled out, then an arch drawn through these two spots, whose centre of radius is in the middle line, will represent the aft-side of the wing transom. Then draw in a horizon tal line, in the half breadth plan, from a line at the side of the wing transom trans ferred from the sheer to the body plan, which is similar to &water line, then, from the aft-side of the transom, set forward upon the line last drawn, about 16 inches, and that is the aft-side of thefashion-piece at that place : then let the heel of it, set ting off the half thickness of the dead wood as before,be set off before timber 36, 6 feet 2 inches, a line drawn through those spots is the aft-side appearance of the cant fashion-piece ; then set off the cant of the foremost cant timber, which is 29, thus ; abaft square timber 28, set off 2 feet 9 inches on the main breadth line, and 22 inches at the aide of the deadwood, draw ing a line which will represent the fore most cant timber, 29; then equally divide the heels of seven more on the deadwood between those already drawn, and like wise on the main breadth line, and the joints of all the cant timbers will be re. presented in the half breadth plan.
It was observed above, that the wing transom was limited by the aft-side of the fashion piece, and so are all the other transoms, unless to assist their conversion by shortening those below the deck tran som, which are six in number, by intro. ducing fashion-pieces abaft that already described.
Now to complete the sheer plan, let the stern timber or shape of the stern at the aft-side be described thus; draw aft an horizontal line at the upper side of the wing transom at the post, and above it set up 4 feet, and draw another horizontal line, which will be the height of the lower counter; then set up from the wing tran nom 7 feet 6 inches, drawing another ho rizontal line, which will be the height of the upper counter , then set off abaft the aft-side of the wing transom 6 feet 10 inches, and square it up the line at the height of the lower counter, and the in tersection with the knuckle of the lower counter ; then, from the said knuckle, draw a curve line about 5 inches hollow,to intersect the upper aide of the wing tran som at the fore side of the rabbit on the stern post, and the lower counter will be represented at the middle line ; then set off abaft the aft-side of the wing transom 8 feet 10 inches, and square up a line to the height of the upper counter, and their intersection will be the knuckle of the upper counter; then to the two knuckles draw a curve about 2 inches hollow, and that will represent the upper counter. Both counters being formed at the middle line, the upper part of the stern timber must be thus finished ; set up, as before, 14 feet 7 inches, the height ofthe top-tim ber line aft, draw a horizontal line; then set off abaft the aft-side of the wing tran som 11 feet, and square it up to the top timber line ; a straight line now drawn from the upper counter knuckle, and through the intersection at the top-tim ber line, and the stern timber at the mid dle line is complete.