Recently, we have not heard the term of modal-shift in the world of logistics. However, it does not mean that truck transportation effectively has been decreasing. We know that truck transportation has a lot of problems in our life. Then, we should investigate modal-shift again. The ferryboat transportation seems to be more suitable for modal-shift because Japan is surrounded by the sea. In this paper, the authors studied on the reason why the ferryboat was chosen in the middle/long-distance transportation. Especially, we focused on the positional relation between departure point of the cargo flow and departure port of the ferryboat. Firstly the authors will show a modal choice model for the ferryboat or truck transportation with the discriminant analysis. Secondly, we will investigate the factor of ferryboat utilization. Finally, we will describe the knowledge which has become clear in this study.