1 See berthing hawsers.
2 As a verb, it describes the action when one of the ends, or butts, of a plank of a wooden hull breaks loose from the copper nails, or treenails, that secure it to a ship's timbers. Because the plank's shape is bent to the curve of the hull, it springs outwards and projects beyond the curve of the hull. When this happens it is said to be sprung. Similarly, the verb is used to describe the wooden mast or spar of a vessel when a crack develops and needs to be fished, or, if very badly sprung, replaced.