The Liberty ships were American-made cargo ships that were designed to make only one solitary ocean voyage. Jeremiah O'Brien was built in Portland, Maine, in 56 days and launched on June 19, 1943. The Jeremiah O'Brien is 441 feet long, 57 feet wide, displaces 14,245 tons and carries a wartime crew of 58 sailors. This plastic model kit is an accurate representation of the military ship.