Sterndrive Propellers: A Rudderless System
Sterndrive propellers are ideal for pleasure crafts and are widely regarded as one of the most significant advances in the history of motor boating. The name of the propeller derives from the location of the sterndrive motor in the stern region of the boat. The propeller, however, is attached to a shaft that extends outside the watercraft.
The Volvo Penta Company manufactured the first sterndrive propellers, but the benefits of such an arrangement were so obvious that other companies began to produce similar propulsion systems.
Advantages of Sterndrive Props
A sterndrive system is economical compared to some other kinds of propulsion systems. Moreover, because it features a low center of gravity, a sterndrive propeller helps to provide stability to boats that might otherwise be more top-heavy and prone to rocking in the water.
Because sterndrive props are relatively compact, they are frequently preferred for luxury craft since they allow a boat to have a cleaner, more elegant profile. Interestingly, though, they are also quite useful for smaller watercraft since space is at a premium in small boats.
A sterndrive propeller means that boats do not require a rudder. For many boaters, this is the single biggest benefit the propeller offers. Others would cite their ability to navigate even in very shallow water as their best feature.
On the other hand, some boaters prefer a propulsion system they can repair themselves, and the complex nature of a sterndrive largely rules this out.
Apollo, Ballistic, and Michigan Wheel are various kinds of sterndrive props.