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Rating:  -
My Englisjh is terrible, so if I can read this book (and I do), this is a good and simple book.
Thank you
Rating: -
Its a good book but I can imagine some difficulties to people not affine with this subject.
I have no problem as a Naval Architect.
Rating:  -
As a person developing a design, I want to put my time into developing hull form, keel, etc., not into hours and hours of calculations about structure which for the moment serve no other purpose than the creation of a plausible weight estimate to be used in Velocity Prediction.
Using Dave Gerr's scantling system, I can produce a good weight estimate, and even a good preliminary construction plan, relatively quickly, and put the rest of my time where it counts the most -- developing the hull form and keel, etc.
As this is the only boat that I have the opportunity to design right now, and it is being done on speculation, there isn't that much time to begin with, and these savings really help. This is especially true in this case because, using Dave Gerr's scantlings, I am not only saving time but also setting the foundation for a good construction plan as well. The book itself focuses on good strong construction, but -- at least for the aluminum construction that I am focusing on -- also considers some options for lightening that structure considerably if that is the desired trade off.
My thanks to Dave Gerr for putting together something that has been needed for a long time.
David J. Fladlien
Rating: -
Despite the scantlings rules are possibly a bit peculiar and often a way off with respect to, say, Lloyds, it is a very good book. It has a lot of details which are difficult/impossible to find in other books and some recommendations which are not even covered in Lloyds rules. Its a good reference book when you simply dont know, dont want to bother your designer and want to have a second opinion. My full recommendations.
Rating:  -
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.
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