The current and future possibilities to adapt the R-JH3 method to ship power prediction practice

Abstract

In the paper the current and future possibilities of the R-JH3 method are discussed. The R-JH3 method (presented in detail in [27J) was elaborated for the ship power prediction on the basis of a new definition of the open-water propeller fully equivalent to the behind the-hull propeller. The R-JH3 method can be used to determine the mean effective velocity and the mean effective pitch coefficient of the behind propeller. The R-JH3 method may be very useful for scale-effect investigations and scale-effect designation when results of model self-propulsion test have to be transformed to the ship scale.