If you want to find out anything about every aspect of post war RN submarine design, engineering, weapons, the art of passive sonar detection, and even Cold War scenarios for midget submarine operations, this is the book. The hallmark of any Norman Friedman book is the exhaustive research involved and the high quality of accompanying photos and diagrams. This book is a brilliant example of his craft, in a word, masterly.
Peter Wykeham-Martin, Warship World

If Germany's Great War gamble... is the subtitle of this fascinating piece of military history - only it backfired, and caused President Wilson to declare war on the Germans and turned the tide in favour of the allied forces. Terrific.
Books Monthly

The author has conducted some wonderful research and has uncovered lots of information that is likely to be new to the reader. One example is that rockets were fired from submerged submarines and that this may have happened near the Atlantic East of America. There is much to learn from this book, and I have to say that it is highly commended. Any World War 2 submarine buff would love to get their hands on a copy, and it is well worth the cover price.
Dr Stuart C Blank

After four years of painstaking research this new book explores in minute detail what really happened before during and after this disaster, and in doing so, maritime author, Tony Booth, takes a fresh look at culpability and investigates some of the alleged conspiracy theories that circulated at the time. The result is the first definitive account of what really happened to HMS Thetis and her men: a fitting tribute some 80 years on.
Model Boats, February 2020 – reviewed by John Deamer

A book that you browse with pleasure and that reports, albeit briefly, with extreme detail the careers of all the submariners who received the prestigious German decoration. Read the full Italian review [link=https://oldbarbedwire.blogspot.com/2019/06/the-u-boat-commanders-knights-cross.html]here[/link]
Old Barbed Wire Blog