The US completed 542 liberty ships in 1942, and 1943 was their peak production year: https://www.mathscinotes.com/2018/05/liberty-ship-production-data/ https://

The US completed 542 liberty ships in 1942, and 1943 was their peak production year: https://www.mathscinotes.com/2018/05/liberty-ship-production-data/ https://www.mathscinotes.com/2018/05/liberty-ship-production... They reduced liberty ship production in 1944 to produce warships (which are more complex and were produced in much lower numbers)