"The
Liberty ship was a [u]class[/u] of [u]cargo ship[/u] built in the [u]United States[/u] during
[u]World War II[/u]. Though British in conception, the design was adapted by the United States for its simple, low-cost construction. Mass-produced on an unprecedented scale, the now iconic Liberty ship came to symbolize U.S. wartime industrial output."
From Wikipedia.