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"Engraving of HMS &amp;amp;#39;Waterwitch&amp;amp;#39; and her hydraulic propellors, from the Illustrated London News, 17th November 1866. Built in 1866 at Thames Ironworks, Blackwall, HMS &amp;amp;#39;Waterwitch&amp;amp;#39; had a novel hydraulic propulsion system which discharged water amidships on either side of the ship"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mediastorehouse.com/hydraulic-propellors-of-hms-waterwitch-november-1866/print/4385471.html>