**1. Introduction**

Even though having the disadvantages from 2020.01.01, the International Maritime Organization (IMO) will strengthen a regulation to enforce the content of sulfur compounds in ship engine exhaust gas from 3.5% to 0.5%. In response, using liquified natural gas (LNG) as a fuel of transportation has emerged. To respond to IMO's environmental regulations, shipbuilders in each country are ordering eco-friendly ships in consideration of new ship construction, and the order status of ships using LNG as fuel is shown in **Figure 1** below. LNG-fueled ships are rapidly being applied and distributed in northern Europe. Since the first passenger ship 'Glutra' was built in Norway for the first time in 2000, National Steel and Shipbuilding Company (NASSCO) has recently ordered 3,400TEU (twenty-foot equivalent unit) container ships.

The current market is still hesitant to introduce LNG fueled vessels. However, if LNG fueled vessels are ordered in earnest, the size of the market is not expected. However, the biggest obstacle to ordering LNG fueled vessels is the lack of infrastructure for fueling vessels [2]. Even though the disadvantages, The Korea government plan to introduce the LNG industry. Life Cycle Assessment for vehicles is
