USS Massachusetts was a steamer built in 1845 and acquired by the U.S. War Department in 1847. She was used by the U.S. Army as a transport during the Mexican–American War before being transferred to U.S. Navy Department in 1849. She traveled widely, including transiting Cape Horn several times as part of her official duties on both sides of the Americas. During her years of service she spent most of her time on the west coast of North America.