29/09/2026
Sometimes both a 3-blade and 4-blade will fit your boat setup. In many cases, it comes down to your engine.
A 4-blade only really makes sense once you’re running a bigger engine. If you’re on something more modest, say around 100 hp, and mainly want less drag, a 3-blade is often the better fit.
Where the 4-blade earns its place is maneuverability. With more blade area in the water, it converts more of your engine’s power into thrust, so you accelerate and stop faster. More bite means the propeller can move more water and put more of that power to work.
It’s also worth a look if you’re running a relatively slow-turning propeller shaft. The extra blade helps make up for that slower rotation, so you get more out of the engine’s power.
🔹 3-Blade: a strong fit for more modest engines. Less drag, and it still gives you solid maneuverability and control.
🔹 4-Blade: comes into its own with a bigger engine, or a slow-turning shaft. More bite, more thrust, faster acceleration and quicker stops.
When both sizes fit your engine and shaft, the choice comes down to how you use your boat. How much motoring do you do, and what kind of trips are you usually making, longer offshore passages or shorter coastal hops?
We’ll talk it through with you and point you toward what fits how you’re sailing.
