Linear motor carriage has the merit which is easy to automate and right-angled drive. In case of container conveyance as applied, it contributes to an efficiency and labor saving at a port container terminal. So, we designed a cargo handling system using linear motor carriage, and evaluated it by a series of numerical simulations. We obtained the following result. (1) Linear motor specification: It is required 7m/s speed and 1.5m/s² acceleration. (2) Cost evaluation: We made cost target of cargo handling machine clear, in order to be same with the conventional terminal. (3) Capability evaluation: It is possible to increase efficiency of stevedoring and carrying in or out. After all, we made a precondition clear for applying linear to the terminal.