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Specifications	<4D6963726F736F667420506F776572506F696E74202D20836083838366838290AE94F5959489EF8D758989947A957A8E9197\ BF81698A43976D91E5897095B6816A2E707074> t0527564
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New Type of Plug-In Electric Boat Project Development of plug-in boat “RAICHO-Ⅰ” Ph.D. Tomoji Takamasa R

Specifications	<4D6963726F736F667420506F776572506F696E74202D20836083838366838290AE94F5959489EF8D758989947A957A8E9197\ BF81698A43976D91E5897095B6816A2E707074> t0527564
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Content	New Type of Plug-In Electric Boat Project Development of plug-in boat “RAICHO-Ⅰ” Ph.D. Tomoji Takamasa “RAICHO-I”is the first electric boat to adopt CHAdeMO standard. Specifications: Length10.00 m Beam2.30 m Depth1.20 m Motor output25 kW Speed Half load10 knots Full load8.50 knots Navigation service45 minutes Battery capacity18 kWh Crew 2Passengers 10 This craft has some special and unique features that set it apart from existing electric boats or battery-powered boats. First, it utilizes a lithium-ion battery with plug-in system or a rapid charging system. A dockside-mounted rapid charger* can bring the boat’s battery up to 80% of full charge within 30 minutes, which is amuch shorter time than is possible under conventional charging systems. The boat can operate for 45 minutes and berth for 30 minutes in a cyclic operation. The powerful lithium-ion battery gives the boat a running speed capability of around 10 knots, enabling it to navigate not only in flat-surface waters but also in open sea conditions where wind and waves prevent operation by conventional battery-powered craft. The absence of exhaust gas emissions from the boat’s electric motor gives this craft an environmental advantage over internal combustion engine-propelled boats, which contribute to reducing air and water pollution, especially in closed water areas. And, because the motor does not emit carbon dioxide fumes, it also contributes in a modest way to the slowing of global warming. A modal shift to use of such battery-powered boats could lead to significant reduction in environmental pollution. Another advantage is the direct motor-driven propulsion system, which produces significantly less vibration and noise while the boat is running and makes casting-off and mooring maneuvers much easier. While the estimated construction cost for this type of boat is about 1.5 times that for a combustion engine-driven craft with the same horsepower, the running cost for the battery-powered boat is about half that for a conventional vessel. It is estimated that more than 160,000 boats can be fitted with electric propulsion in Japan. This boat is named “Raicho”(Japanese for “thunderbird”), signifying expectations that it will successfully operate even in adverse weather conditions. The university plans to construct twenty Raicho-class vessels, and aims to develop the battery-powered boat in cooperation with certain prefectures and cities in 2011. CHAdeMO Association the 8thInfrastructure WorkshopMonday, May 9 th, 2011, 1:30pm-4pm
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