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Sammi Brie (talk | contribs) Importing Wikidata short description: "Ship whose hull is primarily made of concrete" |
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{{Short description|Ship whose hull is primarily made of concrete}}
'''Concrete ships''' are [[Boat building|built]] of [[steel]] and [[ferrocement]] ([[reinforced concrete]]) instead of more traditional materials, such as steel or wood. The advantage of ferrocement construction is that materials are cheap and readily available, while the disadvantages are that construction labor costs are high, as are operating costs. (Ferrocement ships require thick hulls, which results in either a larger cross-sectional area that hurts hydrodynamics, or leaves less space for cargo.) During the late 19th century, there were concrete river barges in Europe, and during both [[World War I]] and [[World War II]], steel shortages led the US military to order the construction of small fleets of ocean-going concrete ships, the largest of which was the [[SS Selma (1919)|SS ''Selma'']].<ref name="SSselmaMarker">{{cite web
|title=S.S. Selma Ship Texas Historical Marker
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