If she only worked one Liberty ship it was a short career. “At the peak of production, the average Liberty could be built in just 42 days. One Liberty ship, the SS Robert E. Peary, was built in a mere 4 days, 15 hours and 26 minutes in November 1942. In 1943, three Liberty ships were completed each day.”
It’s not gross but it is messy and expensive. Easier and cheaper to outsource it.