This is a behemoth of a book. 400 or so very big pages. There are plenty of photos and that helps to break up the text and for one to visualise what is being discussed.
This book concentrates upon the British experience, mostly that in the North Sea and especially topics other than capital ship actions. Hence, German operations in the Baltic, commerce raiders, Black Sea kerfuffles, French and Italian actions in the Med, only get a mention when they impact upon what is occurring in the North Sea. Whilst battleships and battlecruisers are mentioned, as is Jutland, you come away with the strong opinion that Friedman is deliberately avoiding making them the centre piece of this work.
That's no bad thing, either. Most people interested in this area could probably outline the events of May 31st 1916, list the particulars of the capital ships and so a book that deals with other areas is more than welcome. Unlike Castles of Steel by Massie, the interface of high politics and naval questions isn't at the heart of this book. Instead, it is the small ship operations. Anti-submarine warfare, trade protection, mining and economic warfare.
It's a very interesting, if long read. Just holding the book up will help anyone develop their upper arm muscles.