The LNG fuel tanks have been already installed on a car carrier which is under construction at Tadotsu Shipyard Co., Ltd. (Imabari Shipbuilding Group) for the Japanese transportation company Kawasaki Kisen Kaisha, Ltd. (“K” Line). The construction is currently on going with estimated delivery within 2020 fiscal year.
The vessel is equipped with a dual-fuel engine (Mitsui MAN B&W ME-GI), and a fuel gas supply system (FGSS) engineered by TGE Marine Gas Engineering GmbHof Mitsui E&S Group. The FGSS is composed of an LNG fuel tank and a high-pressure pump.
The LNG fuel tank on the vessel is an independent tank of type C, which allows the design pressure to be set higher than other types of LNG fuel tanks. Because the boiling point of methane is -161.5°C, LNG is constantly vaporized due to heat input from outside of the tank. Therefore the tank pressure is increased by the vaporized gas inside of the tank. The type C independent tank allows vaporized gas to be kept in the tank for a relatively longer period of time.
“K” Line, as a participant in the United Nations Global Compact, is promoting activities that contribute to SDGs (Sustainable Development Goals), and this project is a part of its ongoing activities.
Source: “K” Line