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Title: Why rule of thumb in computer era?
Review: As a desginer, I can not understand the meaning of this book.1.Take any scantling rule of classification societies and compare. Scantlings section of rulebook is much more thin, but provides more optoins and engineering basics for calculations of strength.2.What is the meaning of Gerr's own scantling rule, if You have to proceed design approval from classification society? You better use the rulebook of this society, aren't You?3.The book use several assumptions that I mind. For example, the recommendation to add some per cent of hull thickness for every knot over 10 knots is not reasonabe. The designer should deal with speed/length ratio to determine planning/non planning bottom loads.4.The book does not give any idea of hull loads. Overview of loads is desired as soon as he write about strength, something like provided in L.Larsson R.Eliasson "Principles of Yacht Design".But I really like other Gerr's books, indeed!Best regards,A.Nazarov, Naval Architect, Ph.D.
