Comment by chiph

I had to look this up. Marinships were the west coast Liberty Ships, built in Sausalito. Later they build fleet tankers & oilers there, probably to the same "get it done now" quality standard.

https://en.wikipedia.org/wiki/Marinship

My dad went to the European theater on a Liberty. He had the top bunk in the hold and spent the voyage looking at the truly awful welding that had been done in the shipyard. But they didn't have to last longer than a few years, so lots of corners were cut.