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1The Screw Powered Warship 11Topic Introduction The development of the screw powered warship began in 1839 when a Swedish-American inventor John Ericsson revolutionized maritime engineering1 with the invention of the screw propeller However Ericssons invention didnt develop until early 1860s when Abraham Lincoln ordered the US Navy to build an ironclad 2 The US Navy were not on good terms with Ericsson and doubted his design of the USS Monitor so why was Ericsson awarded the contract to build The Civil War stimulated the development of warships 12Purpose Of This Case Study The purpose of this case study is to make the case that war and competition stimulates technological developments Analysing Naval actions of the American Civil War during the 1860s will show that the competition of the Civil War brought the demand of new warships This relates to Kranzbergs fourth law Although technology might be a prime element in many public issues nontechnical factors take precedence in technology-policy decisions3 Studying Ericssons travels inventions and life will demonstrate that technology is a very human activity Kranzbergs sixth law3 And following the differences in the USS Princeton and Ericssons later warship designs demonstrates that invention is the mother of necessity Kranzbergs second law 3 13Scope This analysis will only address the Naval actions of the Union during 1861-1862 of the Civil War with a brief mention of the ironclad CSS Virginia of the Confederates The main issue will be the Battle of Hampton Roads It will follow Ericssons warships and the invention of the Screw propeller from late 1830s Different designs of the screw propeller in other countries will not be examined or considered as Ericsson is thought to be the inventor since he took out a patent for his submerged steamship screw in July 1836 and different screw designs began in 1840s4 14Methods Of Investigation
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