Hamaotsu, Japan
Shiga Prefecture Biwako School operates the "umi no ko" (children of the sea) learning ship, which has been in operation since the 58th year of Showa. The ship primarily serves educational purposes, offering children and teachers the opportunity to learn about the lake and marine life. The school has been using biodiesel fuel (BDF) mixed with diesel at a 10:1 ratio for its operations. In 2026, the school conducted various training sessions, including earthquake response, life-saving, and maintenance checks. The school also has a support program called "Lake Children" (biwa no ko) to engage the community in supporting the ship's activities. The school has been operating in the area since 1983, with a focus on educational and environmental learning.
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