code: def frictional_resistance_coef(length, speed, **kwargs):
      
      Cf = 0.075 / (np.log10(reynolds_number(length, speed, **kwargs)) - 2) ** 2
      return Cf
docs: Flat plate frictional resistance of the ship according to ITTC formula.
      ref: https://ittc.info/media/2021/75-02-02-02.pdf
  
      :param length: metres length of the vehicle
      :param speed: m/s speed of the vehicle
      :param kwargs: optional could take in temperature to take account change of water property
      :return: Frictional resistance coefficient of the vehicle