Improved Maneuvering Forces and Autopilot Modelling for the ShipMo3D Ship Motion Library
Defence R and D Canada - Atlantic Dartmouth, NS Canada
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ShipMo3D is an object-oriented library with associated user applications for predicting ship motions in calm water and in waves. Motion predictions are available in both the frequency domain and the time domain. For predictions in the frequency domain, a ship is assumed to travel with quasi-steady speed and heading in waves. For predictions in the time domain, the ship can be freely maneuvering in either calm water or in waves. This report describes improvements to evaluation of hull maneuvering forces and rudder forces. There port also describes the implementation of a proportional-integral-derivative PID autopilot within ShipMo3D.