RESISTANCE OF TOWING BARGE  
  INPUT RESULTS  
  Wetted area m^2 Rf : Frictional resistance      
  Midship section area m^2 Rf = 0.000136.F.S.V^2      
  Vessel Speed kn Rf = tonne  
  Wind Speed kn Rwave: Wave making resistance      
  Frontal Windage Area A m^2 Rw = 0.014C.F.A.V^2      
  C = resistance of rough sea, 1.2   where      
  A = Hull cross sectional below waterline m^2 Rwave = tonne  
  F = bow shape coefficient
See Below figure for Bow shape
   Rair : Air resistance      
  Significant Wave height
m Ra = 0.0000195.A (Vw + V)^2      
 
      where      
        Rair =  tonne  
        Radded =  tonne  
        Rts= Rf +Rwave + Rair +Radded tonne  
               
               
               
               
               
               
               
               
               
               
               
        Wave height vs Added resistance      
  BOW Shape