The ports next claim our attention, but before they can be drawn, the decks at the side must be represented, and to do this correctly, the round-up of the beam in midships, or the longest, must be re presented by the segment of a circle, as was lately observed for the round aft of the stem.
Transfer the height of gun deck at in the sheer, to the body plan, and then take the half breadth of the midship tim ber, and set it off twice on some straight line, and in the middle set up 6 inches, the round-up of the gun deck at that place, drawing an arch as before.
Then for the round of the deck, or the deck at the side in the sheer plan, set down below the under side of the middle, as already drawn at (1), 6 inches ; and for the other timbers observe the follow ing method : transfer the height of the un der aide of the deck from the sheer to its corresponding timber in the body plan, taking then its half breadth, and apply it from each side the middle to intersect the arch for the round-up of the beam at ®, drawing parallel lines to each intersec tion; then the distance taken in the mid. die, from the lines at the several breadths, being set down on their corresponding timbers, from the under aide of the gun deck in the sheer plan, and a curve there drawn to pass through these several spots, will represent the hang or sheer of the gun deck at the side, and thus may the round-tip of each deck, at the side, be shown in the sheer plan, according to its round-up at the broadest place.
Now for the under side of the gun deck ports, draw a curve line, 2 feet 8 inches above the gun deck line at the side, in the sheer plan; and another parallel line, drawn 2 feet 8 inches above the lower side, will show the upper side of the gun deck ports. Then for the fore aide of the foremost port, set off 9 feet 5 inches be fore timber S, and for its aft-aide 6 feet 5 inches. Then for the fore side of all the The heights and breadths of the chan nel wales may be next drawn; and as it may be readily seen from their situation they are intended to strengthen the top side, they therefore mast be placed as nearly as possible between the lower and upper deck ports, and their lower edge along the midships should be placed so low as only to prevent their being cut by the upper stops of the gun deck ports, to prevent the upper edge being wound ed by the upper deck ports, afore and abaft ; therefore, for the height of the low er edge, set up above the upper edge of the keel, at the fore side of the rabbit on the stem, 30 feet; at 8, 29 feet ; at 0, 28 feet 5 inches ; at 1,27 feet 11 inches ; at F, 27 feet 6 inches ; at ®, 27 feet 3 inch• es; at Ei 27 feet 6 inches ; at 12, 28 feet ; at 18, 28 feet 8 inches ; at 24, 29 feet 8 inches ; at 30, 30 feet 7 inches; and at 36, 32 feet. Then a curve drawn through
these heights will be the lower edge of the channel wale, and another curve drawn 3 feet, parallel about, it, will be the upper edge, thus the channel wale will be re presented.
Now to complete the top side, the seve ral rails, drifts, /cc. remain to be describ ed. Therefore set forward, from the aft side of the middle stern timber 51 feet,the length of the round-house, and this should be no longer than may bejust sufficient for the necessary accomodations, as the shorter the round-house the lower the top side may be kept abaft ; and likewise the stern, as a low snug stern always ap pears handsome, and is best ; as a proof of this, and the objection to lofty quarters abaft, several ships of the navy have their round-houses taken away, and the top sides cut down. Set up above the top timber line 6 feet 6 inches, and draw a curve at that height, parallel to the top timber-line, from aft to the fore end of the round-house ; then draw another line, 2* inches, parallel above it, and that will re present the plank sheer as far as the round-house.
Then, in order to lower the top side in • handsome manner, as it approaches the waist or lower part, have a fall or trance at the fore end of the round-house, turned off, with an inverted scroll, upon the plank sheer of the quarter deck, the under side of which is 4 feet 6 inches above the top-timber line, and parallel to it, to 3 feet 6 inches before timber 12, draw another curve, parallel 2* inches, above the under side, and the plank sheer thus far will be represented, and house the ports at the fore part of the quarter deck. Then near the gangway let there' be another fall or break at the fore part of the quarter deck, its extent 11 feet 6 inches before timber 12; then set up 3 feet 5 inches above the top-timber line, and draw a line parallel thereto, 6 feet 9 inches aft, and another line 2f inches pa rallel above it, and the plank sheer will be completed from aft. Then set up 2 feet 11 inches above the top-timber line, and draw a curve, parallel thereto, to the first break before timber 12, and that will be under the side of the drift rail, and draw another line parallel to 41 inches above that, and it will complete the drift rail thus far; then continue the drift rail as far as the main drift, by keeping its under side 2 feet above, and parallel to the top-timber line ; now finish the main drift at the fore part of the quarter deck with a scroll, and tho plank sheer above it with an inverted scroll ; then complete the drift rail and plank sheer, at the next break, with a quarter round.