USS Roanoke (1857) Steam-Powered Sailing Frigate / Converted Ironclad Warship
The USS Roanoke began life as a wood-hulled, Merrimack-class sailing frigate of 1857 before her 1863 conversion to an ironclad during the American Civil War.
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USS Roanoke began life as a steam-powered frigate with a three-masted profile and ended her days as a fighting ironclad, seeing action during the whole of the American Civil War (1861-1865). She was laid down in May of 1854 by the Norfolk Navy Yard and launched on December 13th, 1855 while formally commissioned on May 4th, 1857. She held a short service life prior to the war where her most notable action during the period was bringing the former President of Nicaragua William Walker and his entourage back stateside from his failed filibuster (an unauthorized military expedition).
As built, USS Roanoke displaced 4,545 tons and held a length of 263.7 feet with a beam measuring 51 feet and a draught down to 23.8 feet. Power included 4 x Martin boilers feeding 1 x Trunk steam engine developing 996 horsepower to 1 x shaft astern. She could make headway at 8.8 knots, held a crew of 674 personnel and was armed through 1 x 10" Dahlgren smoothbore main gun, 28 x 9" Dahlgren smoothbore secondary guns and 14 x 8" Dahlgren smoothbore tertiary guns.