It takes about 7 or more than 45 days for a cargo ship, leaving the ports of the Republic of Korea to reach the Chinese, European, and American continents by sea and train. Unlike general cargo containers, the reefer containers need a consistent temperature and regular inspection everyday to prevent spoilage of the chilled cargos during their long navigation periods. However, since these cargos are often scattered on and off the deck depending on the loading and unloading operations at the port of call, it is very difficult to control and manage them with limited staff. Thus, in this paper, we have proposed a system that can monitor the sensor information (data) provided by NMEA 2000-based CAN at the cabin just using a PLC backbone network without having to install additional communication cables. This system will also be applicable to the cargo trains in the future. We expect that the proposed system will reduce logistic costs and accidents while abiding by the recommendation issued by the International Maritime Organization (MO). We will not only expect an innovative retrenchment of distribution cost, but also automatically secure the freight condition and location.
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