Mathematical modelling of oceanic canoe performance

Abstract

Previous studies of Oceanic seafaring have shed considerable light on the field, but many issues remain unresolved. Computer modelling provides a new method for evaluating the performance of Oceanic canoes and determining the factors that most affect performance. This thesis describes a mathematical model that predicts the performance of canoes based on their design parameters. One can calculate the aerodynamic forces on the sail and the resistance forces on the hull and from these determine the speed and leeway angle of the canoe under specified conditions. The model is capable of predicting the performance of Polynesian double canoes and single outrigger craft with symmetric hulls. The craft modelled may be tacking or shunting. Experimental results identify several design parameters that affect the performance of Oceanic canoes. Sail area, boat mass, and hull geometry have significant effects on performance. Relative hull size and hull spacing have a minimal effect. Given identical displacements, single-outrigger and double-hulled canoes perform similarly.