Gideon Welles, Secretary of the Navy during the Civil War, wanted three experimental ironclad steamers to be built in private shipyards and used against the Confederacy's wooden fleet. A company in Groton was chosen to build a bomb-proof steamer designed by C.S. Bushnell of New Haven. 100 men were hired, and a big shed was built so that construction could continue rain or shine. The ship was ready for launching in 130 days. There were many skeptics who believed that the ship would sink or corrode once it hit the salt water, and there were very few who thought that it might float. Thousands came to watch 's launch on Valentine's Day 1862. Reporters commented that she floated like a duck. When it came time for "Galena" to enter battle, she was pierced 13 times. Thirteen of the crew members were killed and 11 were wounded from flying metal fragments. During the Civil War, 56 steamships were built for government service in shipyards on both sides of the Mystic River.