Currently a yacht propulsion system consist of an engine, transmission, prop shaft, and propeller. The stanchion that is used under the boat to hold the prop shaft consists of a brass arm containing a brass bearing with a rubber insert, which causes friction and robs the drive train of power.



The Hagstirr™ replaces the stanchion and utilized the engines torque and multiplies the amount of water flow. The yacht then becomes significantly faster and uses less fuel with the same horsepower further extending the range of the yacht. By adapting a multi-prop system to a single prop design, the yacht becomes significantly more efficient. The Hagstirr™ also uses state of the art materials to reduce drag while efficiently using the engines torque.


The Hagstirr™ comes in several different designs to accommodate different hull designs and horsepower levels. The basic design is a stationary unit that consists of one to three props that can directly replace current models. The 3 prop design contains a speed prop running at 3000 RPM's while the counter rotating 2nd and 3rd props run at a thundering 6000 RPM's.


Level II takes the Hagstirr™ and implements a hydraulic trim attachment and makes the boat plane better. Yachts typically plane poorly by plowing through the water causing drag. By adjusting the prop pitch level, the yacht is launched out of the water, enabling faster speeds and increased fuel efficiency.