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Gerrs Roll Period Recommendation - Boat Design Net Gerr includes a version of the "captain's formula" in his earlier article on p 9, though he doesn's use that name t=0 44*B (ft) GM (ft)^0 5 It is interesting that Gerr's formula has a fixed coefficient He says it "will provide a close estimate of roll time for any vessel of normal form" That brings up the question of what's meant by "normal
Calculating Power for Displacement Boats | Boat Design Net Mat-C Senior Member It seems that whilst there are plenty of ways of calculating the power required for planing hulls, there's not so many for displacement craft I have seen Gerr's Displacement Speed Formula, from his "Propellor Handbook"
The Dave Gerr Method - Boat Design Net Hi, Does anyone know the factor of safety that Dave Gerr implemented into this " elements of boat strength" scantling determination book? As I
Gerr Elements FRP Ambiguities? - Boat Design Net Hello everyone, I've been working up a spreadsheet based on Gerr's "Elements of Boat Strength", for cored FRP With regard to the density of the