Shows the trestle-trees, cross-trees, and the eye bolts for the futtock shrouds.
树状支架,树状十字及为连接上下桅的铁索的眼螺栓。
英语百科
Eye bolt
An eye bolt is a bolt with a loop at one end. They are used to firmly attach a securing eye to a structure, so that ropes or cables may then be tied to it.