Barge Particulars      
  Length   L =  m
  Breath   B =  m
  Draft   T =  m
  Towing speed Vtow =  knots
  Windage Area      
  Hull (surface above waterline) Swind-hull =  m2
Shape coeffiecient Cs =
Height coefficient Ch =
  Additional surface of Cargo Swind-additional =  m2
Shape coeffiecient Cs =
Height coefficient Ch =
  Hull+Cargo windage area Areawind =  m2
  Current Area      
  Surface   Scurrent =  m2
Drag coefficient
  Current screen Areacurrent =  m2
  Environmental Condition      
  Sea water density ρwater =  kg/m3
  Air density ρair =  kg/m3
Wave significant height Hs =  m
Wind speed Vwind =  knots
Current speed Vcurrent =  knots
  Wave drift force      
  =     Tons
  Resistance due to towing in calm water    
 Tons
  Additional resistance due to wind and current    
 Tons
TOTAL BARGE RESISTANCE =  Tons
Tug boat efficiency
TUG BOAT BOLLARD PULL CAPACITY  =  Tons