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Transcripción del abstract original del autor: Osaka Gas and Kobe Steel have jointly developed a high performance ORV (SUPERORV) whose lower half of heat transfer tubes have double tube structure. The double tube structure improves heat transfer performance by suppressing ice formation on the tube surface. SUPERORV increases LNG vaporizing capacity per heat transfer tube 3 times and reduces required sea water volume and installation space by 15% and 40% respectively compared with a conventional ORV (HPT TYPE KOBE STEEL, LTD- manufactured). The first commercial SUPERORV was constructed in Himeji terminal of Osaka Gas and started operation in November, 1998. At present, 13 units of SUPERORVs have been applied in the LNG terminals in Japan and Europe (as of January, 2003). This paper reports heat transfer tube's structure and basic concepts of development, performance test results in the phase of development, basic specification and actual operational results of the first commercial SUPERORV, and marketability of SUPERORV.