Solar electric boat
Electric boats were very popular from the 1880s until the 1920s, when the internal combustion engine became dominant. Since the energy crises of the 1970s, interest in this quiet and potentially renewable marine energy source has been increasing steadily, especially as more efficient solar cells have become available. The first practical solar boat was probably constructed in 1975 in England. The first electric sailboat to complete a round-the-world tour, including a transit of the Panama Canal, using only green technologies is EcoSailingProject.
