- Electric boat -
  1. Low environmental stress and low carbon society
    • Zero emission of NOx, SOx and CO2 when running
    • Lakes and marshes where the use of combustion engine-propelled ships is prohibited in Europe and America.
    • Reducing CO2 levels by 50-70%
  2. Low noise and low vibration
    • Sightseeing boat, traffic boat, ferry, research vessel, fishing boat, fisheries patrol boat
  3. Easy maneuvering due to the use of an azimuth thruster

electric boat

- Running cost and market -

    While the estimated construction cost for this type of boat is about 1.5 times that of a combustion engine-driven craft with the same horsepower, the running cost for the battery-powered boat is about half that of a conventional vessel.
    Based on governmental data, it is estimated that more than 160,000 boats can be fitted with electric propulsion in Japan.

- Lithium-ion battery with plug-in system or rapid charging system -
  1. The dockside-mounted rapid charger can bring the boat's battery up to 80% of full charge within 30 minutes, which is a much shorter time than is possible using conventional charging systems (usually taking 10 hours).
  2. The boat can operate for 45 minutes at full speed and remain at berth for 30 minutes while recharging in a cyclic operation.
  3. The powerful lithium-ion battery gives the boat a running speed of around 10 knots (19 km/hr), enabling it to navigate not only in calm waters but also in open sea conditions where wind and waves prevent the operation of conventional battery-powered craft.
- Participation enterprise consortium -

    The electric boat "RAICHO-I" was built and the rapid charger was installed by the university, with financial and technical support from the participation enterprise consortium.

  • TEPCO: Joint research
  • Tosen Marine Inc.: Joint research
  • Yamaha Motor Co.: Ltd., Joint research
  • ULVAC, Inc.: Joint research
  • Fuji Heavy Industries Ltd.: Technical co-operation
  • Yokogawa Electric Corporation: Technical support
press conference

Tokyo University of Marine Science and Technology, Etchujima campus

14 newspapers, Asahi, Daily Yomiuri, and Nikkei etc.