The 82,200-dwt Galaxy River was delivered from Kawasaki's Sakaide Shipyard on Thursday.
It will perform a consecutive voyage contract with Japan Gas Energy Corporation.
The vessel will take LPG from the Middle East to Japan and other Asian countries.
K Line said: "In addition, due to the recent shale revolution, there has been a lot of LPG exported from the United States and this is expected to increase.
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