Propulsion Factors

For the calculation of the propulsion factors, Hydro has available five different empirical methods given below from which you are able to choose the one most appropriate for the particular ship under consideration. Alternatively, you are able to supply values for the wake fraction, thrust deduction and relative rotative efficiency.

• Holtrop and Mennen

• Guldhammer and Harvald

• Van Oortmerssen

• BSRA Methodical Series

• Series 60

• User Input