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  2. Electric boat - Wikipedia

    en.wikipedia.org/wiki/Electric_boat

    An electric boat is a powered watercraft driven by electric motors, which are powered by either on-board battery packs, solar panels or generators. [1] While a significant majority of water vessels are powered by diesel engines, with sail power and gasoline engines also popular, boats powered by electricity have been used

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  4. Water turbine - Wikipedia

    en.wikipedia.org/wiki/Water_turbine

    The main difference between early water turbines and water wheels is a swirl component of the water which passes energy to a spinning rotor. This additional component of motion allowed the turbine to be smaller than a water wheel of the same power. They could process more water by spinning faster and could harness much greater heads.

  5. Marine propulsion - Wikipedia

    en.wikipedia.org/wiki/Marine_propulsion

    Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats , most modern ships are propelled by mechanical systems consisting of an electric motor or internal combustion engine driving a propeller , or less frequently, in pump-jets , an ...

  6. Water power engine - Wikipedia

    en.wikipedia.org/wiki/Water_power_engine

    A water power engine includes prime movers driven by water and which may be classified under three categories: [1]. Water pressure motors, having a piston and cylinder with inlet and outlet valves: their action is that analogous of a steam- or gas-engine with water as the working fluid – see water engine

  7. Kochi Water Metro - Wikipedia

    en.wikipedia.org/wiki/Kochi_Water_Metro

    Kochi Water Metro is also first of a kind in the world to have such an extensive network of battery-powered boats. The boats uses lithium titanate oxide battery that can be charged very quickly and meets high safety standards. It can be charged in 10–15 minutes and there is a facility to charge the batteries even when the passengers are ...

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  9. Pumped-storage hydroelectricity - Wikipedia

    en.wikipedia.org/wiki/Pumped-storage...

    A PSH system stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation. Low-cost surplus off-peak electric power is typically used to run the pumps. During periods of high electrical demand, the stored water is released through turbines to produce electric power.