This book was one of my most referred-to "ship bibles" when it was just into its second printing (and longer ago than I care to admit I was around!). It's pretty darn good for its size, and in its original deep-red, hardbound cover with fine, glossy paper, held up to much wear and tear for decades.
My only complaint about Watts' book is some erroneous information it contains, regarding a certain IJN destroyer's late-war AA armament changes which, after the advent of the Internet and the cornucopia of more accurate information that followed, caused me some minor grief when I cited it as a reference (not the first time that has happened, by the way

).
That's a pretty respectable record, for a book of over 40 years' standing, IMO.
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Danny DON'T "waterline"...!