The level of detail here is quite daunting to a landlubber like me. Fortunately there's a glossary. The glossary is very helpful - they should be a mandatory standard feature in specialist books, in my view - but could've been better. E.g. the nautical meaning of terms such as beam and draught are given, but sheer isn't. And whilst many of the acronyms used are expanded and defined, not all are.
The book begins by looking at how in WWI a similar project was undertaken at more or less wars end, the ships made not seeing wartime service at all, and overproduction contributing to postwar shipbuilding slumps. Also late in coming was the adoption of convoys. In contrast, in WWII these projects were set in motion much earlier, and a mission to the US headed by the very young Cyril Thompson, of Sunderland shipbuilders Thompson's, was integral to the story told here, of the development of the Liberty ships.
Henshaw dedicates his book to Cyril Thompson, the 'unsung hero in the evolution of the Liberty ship', and extols their virtues by not only clearly tracing their lineage, but also highlighting how they not only met but exceeded their original brief, doing the job intended for them, and then going beyond that, forming the basis of numerous variants, and often surviving and serving long after WWII.
There are plenty of photographs, liberally sprinkled throughout, many of which are great. There are also a good number of relatively poor quality. But as Henshaw explains, they're as good as he could find, and illustrate important points. Using such surprisingly scant reference material - scant when you consider over 2,700 of Liberty ships were built - Henshaw has produced what is probably the most attractive aspect of this book, the numerous line drawings.
Some of these are quite accurate, where plentiful reference such as other detailed drawings could be sourced, whilst others, as Henshaw is at pains to point out, are educated guesses based on the available evidence. I love them, and hope they might one day help me build models.
A fascinating book, well worth having/reading.
 Built expressly for the construction of these ships, and now the site of Philadelphia International airport.