On a vessel's hull, a rib is a lateral structural member which runs between gunwales and sprouts from the keel.[1] They are called "ribs" because they resemble the human rib. The ship's outer planking and inner sheathing are attached to the ribs. For ships that are too large for a rib to be made out of a single piece of wood, the ribs are made of multiple sections called futtocks that are scarfed together.[2] The ancient writers Polybius and Plato held that, since the ribs of a ship were the most important part of the ship's framework, then if the ribs were new, then the ship as a whole was new.[3] Iron was first used in shipbuilding to make the ribs and frames, with wood sheathing attached to them, but this proved inadequate compared to replacing the wood sheathing with iron plates.[4]
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See also
References
- ^ Steffy, J. Richard (December 2013). "Illustrated Glossary of Ship and Boat Terms". In Ford, Ben; Hamilton, Donny L; Catsambis, Alexis (eds.). The Oxford Handbook of Maritime Archaeology. Oxford Handbooks. doi:10.1093/oxfordhb/9780199336005.013.0048.
- ^ Van Gaasbeek, Richard Montgomery (1919). A Practical Course in Wooden Boat and Ship Building. F.J. Drake. pp. 222–23. Retrieved 29 November 2020.
- ^ Torr, Cecil (1894). Ancient Ships. University of Michigan Press. pp. 39–40. Retrieved 29 November 2020.
- ^ Fairbirn, Sir William (1865). Treatise on Iron Ship Building. London: Longmans, Green, & Company. p. 71. Retrieved 29 November 2020.
This page was last edited on 22 March 2023, at 07:42