With tailwind of the "Jinmu” and “Iwato” economic booms in the 1950s, ports in Japan faced serious congestion. Due to the long queue of ocean-going vessels waiting for offshore stevedoring services , the Maritime Credit Corporation was fully mobilized to increase number of conventional barge. Consequently around 1970, needs of conventional barge at Yokohama　Port peaked out, and it started losing business drastically by emerging of innovative stevedoring methods and containerization.

The current “conventional barge service” only engages in exports of factory plant machineries and steel products etc. and imports of grain that the cargo handling volume is merely about 5% compared to its peak.

Half a century past today, Yokohama Barge Service works to reduce greenhouse gas emissions through container transportation by green ships.