What is the purpose of propeller pitch in a marine vessel?

The purpose of propeller pitch in a marine vessel is to determine how far a boat will move forward with each rotation of the propeller. Propeller pitch is essentially a measurement of the distance a propeller would theoretically travel in one complete revolution, assuming no slippage in the water.

A higher pitch means that the propeller is designed to push the boat farther with each rotation, which can affect the vessel’s speed and efficiency. Conversely, a lower pitch may offer better acceleration but at lower speeds. Understanding propeller pitch is essential for selecting the right propeller to match the boat’s performance characteristics and intended use, such as towing or cruising.