What does the crankshaft provide in a marine engine?

The crankshaft in a marine engine plays a crucial role by converting the linear motion of the pistons into rotational motion. This rotational motion is essential for driving the propeller, which in turn propels the vessel forward through the water. The crankshaft acts as a key component in the engine's mechanical system, efficiently transferring the power generated by the combustion process to the propeller shaft.

The function of the crankshaft is fundamental to the overall operation of the marine engine, as it is directly linked to the power output and the ability to navigate the vessel. By providing this rotational motion, the crankshaft enables the engine to produce the necessary thrust required for movement, making it a vital part of the maritime propulsion system.