screw propellors

1. The Screw Powered Warship 1.1 Topic 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, Ericsson¡¦s invention didn¡¦t develop until early 1860¡¦s, 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 …showed first 75 words of 2175 total…

…showed last 75 words of 2175 total…prnctn.htm 6 John H. Lienhard ¡¥The Engines of Our Ingenuity¡¦ 1997, No. 695: John Ericsson. 7 Richard Hough ¡¥A history of Fighting Ships¡¦, Octopus Books limited, 1975 p. 105-108 8 Jeff Johnston, ¡¥Building the USS Monitor¡¦, ¡¥Monitor¡¦ Nation Marine Sanctuary, National Oceanic and Atmospheric Administration 9 Trevor Nevitt Dupuy, ¡¥The Military History of Civil War Naval Actions¡¦, Franklin Watts, Inc. 1961, p. 39 ¡V 50 10 Inventure Place, ¡¥John Ericsson: Propelling Steam Vessels¡¦, NetForce Development, Inc., Internet Website, http://www.invent.org/book/book-text/40.html