An Alternative Approach to Validation of Ship Manoeuvring Models

This paper is devoted to validation of ship manoeuvring models. An alternative approach to validation is proposed. It is based on comparison of accelerations measured in a validation experiment and calculated using a simulation model. It can be applied to arbitrary trials and in-service collected data. The approach is applied to assess three versions of a manoeuvring model of a twin-screw, twin-rudder vessel. Case trials are the 20° turning circle and the 20°/20° zigzag, performed with a free sailing model. Full simulations are performed as well. Conclusions made from two approaches are compared.