Boston-based writer Doug Most's new book is called "Launching Liberty: The Epic Race to Build the Ships That Took America to War." Most, who spent 15 years at the Boston Globe, writes: "In total, American shipyards produced 2,710 Liberty ships in essentially four years, peaking in the spring and summer of 1943, when almost 800 ships were built in seven months..." A lot of the credit is given to Henry Kaiser, who produced half of all Liberty ships – 1,490. By 1943, average time per ship was down to 42 days, the fastest month recorded. Author Doug Most is currently working at Boston University.

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