Steffy: A transverse timber, or line or assembly of timbers, that described the body shape of a vessel and to which the planking and ceiling were fastened. Frames were sometimes called timbers or, erroneously, ribs (see Rib). Ancient ships often had frames composed of lines of unconnected timbers; later ships usually had compound frames composed of floor timbers, futtocks, and top timbers. Square frames were those set perpendicular to the keel; in the bow and stern there were cant frames, running obliquely to the keel. Forward of the cant frames and fayed to them, in large round-bowed vessels, were the frames running parallel to the keel and the stem, sometimes called knuckle timbers; more accurately, these were the hawse pieces and knightheads, the latter being the frames adjacent to the apron or stemson that extended above the deck to form bitts and support the bowsprit. The aftermost frames were the fashion pieces, which shaped the stern.