Electronics & NavigationSailing

How to Pick the Right Boat Propeller

How do you know if you have the correct boat propeller?

In this article, we help you identify some considerations when getting a boat propeller to efficiently navigate on the water surface.

What Is a Boat Propeller?

A boat propeller is a fan-like structure that rotates at a given speed and distance to move a water vessel. It’s usually composed of two to three blades at a minimum, which grind through the waves in order to get your boat to the desired direction or location.

Boat Propeller Pitch and Diameter

Boat prop pitch is the distance that your boat travels from point A to point B, every time the boat propeller revolves or turns; thus, adjusting it by an inch provides a 200 Rate Per Minute (RPM) difference than the usual movement. For the boat prop diameter, it’s just the length of the prop from its center to its blade tip.

There are only two general rules to remember when deciding on your preferred boat prop pitch and diameter, in terms of boat prop size.

  1. The larger the boat prop pitch and diameter are, the heavier your boat is and the slower it gets.
  2. The smaller the boat prop pitch and diameter are, the lighter your boat is and the faster it gets.

More details on Watersports Training Channel.

Boat Propeller Blade Number

Boat prop blade number also contributes to your boat’s overall performance. There are still some boats that use two-blade props but may not provide the recommended maneuverability on the water’s surface which is why three-blade boat props became popular. Some benefits of each boat prop blade number are given above.

For a thorough explanation three and four-blade boat propellers, click here.

Aluminum vs Stainless Steel Boat Propellers

Even though there are other boat props which are made from an alloy or a combination of metals consisting of nickel and bronze, the two most popular are aluminum and stainless steel.

Aluminum boat props, aside from being commonly available, are also very effective when used on shallow bodies of water like creeks and lakes because they soften the impact of rocks underneath. On the other hand, stainless steel boat props translate to a sophisticated look and improved performance on open waters.


Picking the right boat propeller can take a lot of mind exercise. But carefully weighing out your options as to which one suits your needs, offers your boat the necessary advantage for efficiency and agility. If we missed out on something, feel free to make a comment below.

Related Articles

Check Also
Back to top button