No Audio. The 209 thousand ton tanker, Idemitsu Maru, is launched in Yokohama, Japan. It's the biggest ship ever built by man. It'll carry oil from Persia to Japan. It took seven months and 15 million dollars to build her. Next year, she may have an even bigger sister-ship! Aerial shot of Yokohama sea port and the massive ship sitting in it's berth. High Angle Shot - Ship builders and technicians working on the deck of the super tanker. CUS - The Idemitsu Maru "super tanker" leaving its berth. MS - Idemitsu Maru in the water with tug boats guiding her, people on the pier watching.