I worked on the U.S.S Constitution during the restoration prior to her 200th anniversary in 1997. I was lucky to have the opportunity to "reinstall" the diagonal riders which corrected much of the hog and gave her enough stiffness that she was able to sail again for her birthday. Good times. Main top mast crew. Also got to rebuild he captains and commodores cabins with furniture that could be knocked down to go into battle.
•Diagonal Riders-six pair on each side in the three principal pieces with two shorter ones to complete the pair tabled and bolted together with six iron bolts one and one-fourth inch square in each scarf and three in the short pieces to be bolted through the bottom plank at every two feet with one and one-eighth inch copper bolts the two midship ones to butt against each other the foremost of the two midships riders to be cut with a birds mouth and to fit under the eighth beam from forward the after one of the midship ones to be cut and fixed in the same manner under the eighth beam from aft the other riders to be the distance of two beams apart and fitted in the same manner to be kept the same distance aft and forward at heel as they are at head to be tenoned and bolted into the keelson.