The deck frame may be either with or without carlins. When without carlins, it must be secured to the side by one lodging knee, and one diagonal or hanging knee to each end of every beam. When carlins are used the deck frame must be secured by two lodging and one diagonal or hanging knee to every beam end.
A shelf piece may be used instead of the lodging knees. It must be jogged up to the beams one-fifth of its thickness, and fastened with two through bolts to be driven from outside through every frame and clenched, and the beams bolted thereto, with at least two bolts in every strake, exclusive of bolts driven through knees.
Vessels of 12 feet depth of hold and upward, shall have at least two brace beams on each side of centreboard case, secured to the same and sides of the vessel, with two knees at each end of each beam, and well fastened. They must also have between deck beams not over twenty feet apart the entire length of the hold, and must be secured by two lodger knees at each beam end, and well fastened with clench bolts.
Beams crossing the centreboard case shall be secured to the same by two bolts, one on each side of the case, to be driven down through the upper, and half way through the second plank of centreboard case. The bolts to be of the same size as the edge bolts in centreboard case.
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