Drag Characteristic of High Speed Small Boat

Abstract

The speed of small water crafts has recently increased more and more. At the same time, however, it seems to be getting important for these crafts to take into account of the environmental and safty aspects. Water jet propulsion might be a possible candidate in future for that purpose, although at present it does not have economical advantage to other existing propulsion systems in most cases. This paper demonstrates the validity of a prediction methods for the hydrodynamic resistance of these high-speed small crafts by using public data and Savitsky's formula, which be useful at the initial design stage of the water jet propulsion system for these crafts.