An Analysis Method of Voyage Data

Abstract

Anyone recognizes the importance of grasping actual ship's propulsive performance in a real sea. Nevertheless, enough trials to do so have not been made using the data on an abstract log book (called "ab log data") which are the records of ship's voyage data. The main reason for this seems to lie in the difficulty in dealing with the ab log data. To make the ab log data useful, it is necessary to analyze them properly. The authors have tried to develop an analysis method of the ab log data easily applicable to any ships and able to bring useful results. This paper describes the developement of the analysis method, introduces some examples of its application, and shows its practical effectiveness.