page_title: Resurgam
section_title: Construction
hierarchical_section_title: Resurgam / Resurgam II / Construction
caption_attribution_description: A sketch of the Resurgam II submarine design form 1879
context_page_description: Resurgam is the name given to an early Victorian submarine and its prototype, designed and built in Britain by Reverend George Garrett. It was intended as a weapon to penetrate the chain netting placed around ship hulls to defend against attack by torpedo vessels.
context_section_description: The second Resurgam was built by Cochran & Co. at Birkenhead, England, and launched on 26 November 1879. Her construction was of iron plates fastened to iron frames, with the central section of the vessel clad with wood secured by iron straps.  As built, she was 45 feet (14 m) long by 10 feet (3.0 m) in diameter, weighed 30 long tons (30 t), and had a crew of three. She was powered by a closed cycle steam engine originally patented in 1872 by the American engineer Emile Lamm which provided enough steam to turn the single propeller for up to four hours. She was designed to have positive buoyancy, and diving was controlled by a pair of hydroplanes amidships. At the time she cost £1,538.
  After successful trials in the East Float at Wallasey, it was planned that Resurgam should make her way under her own power from Birkenhead to Portsmouth for a demonstration to the Royal Navy.
caption: Sketch of the design of Resurgam II by George Garrett
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