Title: HUSH
Description: Written in a very personal, anecdotal, style this book by Lt. Wilson, RNVR is about the development and application during WW1 of what is now called ASDIC.  It is illustrated with b&w photos of the persons involved in the research and of the ships, British and American, used during the trials.
Subjects: WWW1, naval history, ASDIC development, testing and early application; anti-submarine warfare
Places: Norther Scotland
Time periods: WWW1