USS Yucca (1864)  USS Yucca (1864) was a steamer acquired by the Union Navy during the American Civil War. She was used by the Union Navy as a gunboat in support of the Union Navy security of Confederate waterways. "Yucca"—a wooden-hulled screw steamer built in 1864 by Donald McKay at East Boston, Massachusetts—was purchased by the Navy on 25 February 1865 and was commissioned at Boston on 3 April 1865, Acting Master Henry C. Wade in command. Commissioned just six days before General Robert E. Lee surrendered the Army of Northern Virginia effectively ending the American Civil War, "Yucca" saw no combat in that or any other conflict. Her period of active service covered only three years, most of which she spent on the Gulf Station in the Gulf of Mexico. One sailor, Captain of the Hold John Robinson, was awarded the Medal of Honor for swimming ashore during a storm to aid "Yucca" on 19 January 1867. By 1868, she had moved to Portsmouth, New Hampshire, where she was placed in ordinary. On 26 August 1868, "Yucca" was sold at Portsmouth to Mr. R. M. Funkhauser.