Propellers
Propellers are rotating devices that are used to propel a ship through the water. They are typically made of metal and consist of two or more blades that are shaped like airfoils. The blades are mounted on a hub, which is connected to the ship's engine through a shaft. As the engine turns the shaft, the propeller blades rotate, creating a force that propels the ship forward. The size and shape of the propeller blades, as well as the number of blades, are carefully designed to optimize the ship's speed and efficiency. Propellers are an essential component of most ships and are critical to their safe and efficient operation.
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