Now, to end the main half-breadth for ward, proceed as follow : when the height of breadth cuts the fore-part of the rabbit on the stem, square it down to the middle line of the half-breadth plan, by taking its nearest distance from the adjoining perpendicular, and setting off that distance in the same manner from the same perpendicular on the -middle line,in the half-breadth plan, and there square up aline; then set up on it Winches, the half-siding, or thickness, of the stem at that place , from the middle line then, with compasses opened to 4 inches, the thickness of the plank of the bottom, sweep aft from the half-thickness of the stem an arch ; then with a radius equal 26 feet 6 inches will finish the fore-part of the main half-breadth line ; from the following centre draw a line at 4 feet 4 inches below, and parallel to the middle line of the half-breadth plan under timber 0, and from timber 0 set forward 20 inch es, and square it down to the line last drawn, and its intersection will be the centre required ; then with radius 26 feet 6 inches, sweep the segment of a circle from timber S, till it will intersect the back of the arch at the thickness of the bottom plank ; thus the main half breadth line is completed, except the after end, which must be finished here after.
Next set off the half-breadth of the rising, which limits the distance of the centres of the floor-sweeps from the middle line on their respective heights in the body plan. Set up from the middle line of the half-breadth plan, at timber K, 2 feet 9 inches, at F, 7 feet .2 inches ; at 0, 8 feet 6 inches ; at 6, 8 feet 5 inches ; at 12, 7 feet 6 inches ; at 18, 5 feet 3i inches ; and at 24, 8 inches ; then drawing a curve through those spots, the half-breadth of the rising will be seen.
We may now proceed to drawing the vertical curve appearance those several timbers will form, below the lower height of breadth line in the body plan. Continue aft the upper edge of the rabbit of the keel line, and on it square up a line about 40 feet abaft the after perpendicular, and call this the middle line ; then, at 24 feet distance, which is the main half breadth at midships on each side the middle line, square up a aide line ; then, within the boundaries of €), on the right hand, will be delineated the several timbers which compose the fore•body ; and within ®, on the left, those of the after-body.
Now transfer the several heights of the lower height of breadth line from the sheer plan at and before et, and set them up the side line in the fore•body plan, drawing horizontal lines across at those heights to the middle line ; then take the several main half-breadths from el, and forward from the middle line of the half breadth plan, and set them off from the middle line on their corresponding heights of breadth last drawn in the fore body plan, and the utmost limits, or main breadth, of each timber will be shown.
Now draw another curve in the half breadth plan which shall be the radius or length, whereby portions of circles are swept, to form the shape of the body some distance below the main breadth. Set up from the middle line at in the half breadth plan 18 feet 9 inches ; at F, 18 feet ; at K, 17 feet ; at 0, 15 feet 8 inches ; at 9, IS feet It inches ; at 6, 18 feet 9 inches ; at 12, l&feet 7 inches; at 18, 17 feet 2 inches ; at 24, 15 feet 3 inches ; at 30,12 feet 3 inches; and at 36, 7 feet. Draw a fair curve through these spots, and the length of all the sweeps may be obtained; then transfer the length at ®, and the timbers before it, and set them off with the half breadth of their respective timbers on their correspond ing height of breadth lines in the fore body plan, sweeping an arch about 7 feet below each height.
In the same manner transfer the heights for the centres of the floor-sweeps, from the sheer to the body-plan. and on those heights, from the middle line, set off the corresponding rising half breadths, their intersections between the centres, from which each floor may be swept by the following radii, without its rising half breadth, the radius at ® is 11 feet, and what this is above the upper edge of the keel is called the dead rising. The radius at F is 13 feet 7 inches; at K, 20 feet 3 inches. Then, with a curved mould, sometimes called a reconciling sweep, (as in some bodies it might be a portion of a circle,) placed so as to cut the back of the lower and floor-sweeps, the timber 0 will be represented almost to the keel, and so may the other timbers as far as K; then, to complete them to the keel, set off the half siding of the keel, which is 9 inches, on each side the middle line in the body-plan, below the line for its up per edge, and draw a line on each side parallel to the middle line ; then with compasses, opened to four inches, make two arcs, on each side, from the upper side of the keel, to cross each other to wards the middle line ; draw a straight line from the upper, and another from the lower side of the rabbit, to intersect the arcs at equal angles, and the rabbit of the keel will be shown. Then a straight line, or a mould a little hollow, (some times called floor-hollow,) placed to the siding of the keel at the upper edge of the rabbit, and to cut the back of the floor sweep, the timbers as far as K may be completed as the keel.