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  • EfficientPowerboat02 - Boat Design
    In the previous article we looked at the fuel consumption and range of early offshore powerboats, and began our examination of powerboat efficiency, by using transport effi-ciency and miles per gallon to compare boats We saw how longer more slender hulls could be moved farther faster for the same amount of fuel Comparing different hull forms normalized for displacement, we also saw that
  • Dave Gerr Boat Strength Scantling - Boat Design Net
    I am reading Dave Gerr book ''Boat Strength'' I was wondering were do the scantling come from His own experience or a standard? Also ISO 12217 do
  • Gerrs Roll Period Recommendation | Page 4 | Boat Design Net
    Gerr's Roll Period Recommendation Discussion in ' Stability ' started by DCockey, Jun 20, 2011
  • Gerrs Math on Hull Speed - Boat Design Net
    Gerr's Math on Hull Speed Discussion in ' Hydrodynamics and Aerodynamics ' started by Brian Alsum, Dec 2, 2018
  • 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
  • Plans for Gerr Nester | Boat Design Net
    Plans for Gerr Nester Discussion in ' Wooden Boat Building and Restoration ' started by seangoodwin, May 12, 2011
  • Gerrs Roll Period Recommendation | Page 2 | Boat Design Net
    Gerr's Roll Period Recommendation Discussion in ' Stability ' started by DCockey, Jun 20, 2011
  • 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
  • Dave Gerr - ISO !! Scantling !! | Boat Design Net
    Hi! I was going to make an excel sheet to compare the ISO scantling and the Dave Gerr rules for a composite 45' top speed 45 kts Someone has
  • Questions about Dave Gerrs book The elements of boat strength
    Dave Gerr's book is not intended to be a definitive engineering guide It uses much simpler methods of determining scantlings that are not as fundamental or as accurate as the classification society rules (ABS, Lloyds, etc ) which are based on more fundamental engineering principles So when Gerr's book gives you a thickness of 6 2 mm, you can take it with a grain of salt, and round down as





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