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  • 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 | Page 4 | Boat Design Net
    Gerr's Roll Period Recommendation Discussion in ' Stability ' started by DCockey, Jun 20, 2011
  • 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 2 | Boat Design Net
    Gerr's Roll Period Recommendation Discussion in ' Stability ' started by DCockey, Jun 20, 2011
  • Power predition formula - Boat Design Net
    Gerr formula 1 and Keith's formula were less accurate and Kieth's formula gave the lowest answers for required power Don't know what coefficients he used but while they are all good useful formula get the coefficient wrong and you might as well just guess let me explain
  • 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
  • Simplified Scantling Formula | Boat Design Net
    Bases for Gerr? Thanks for the notes, I am familiar with Gerr's book but I have no idea what it is based upon He relates the scantlings to LOA, Beam and draft plus freeboard This would work as a rough value but I dont know if it is derived from something or rooted in his own experience
  • 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
  • Plans for Gerr Nester | Boat Design Net
    Plans for Gerr Nester Discussion in ' Wooden Boat Building and Restoration ' started by seangoodwin, May 12, 2011
  • 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"





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