USS Signal – a small 190-ton steamship – was acquired during the second year of the American Civil War by the Union Navy and outfitted as a gunboat. She also served other types of duty, such as that of dispatch vessel and convoy escort.
USS Signal – a small 190-ton steamship – was acquired during the second year of the American Civil War by the Union Navy and outfitted as a gunboat. She also served other types of duty, such as that of dispatch vessel and convoy escort. (en)