Propulsion Systems, Inc.

Controllable Pitch Propellers are Propulsion Systems Inc's mainstay.  PSI manufacturers CP Propellers from 500 HP to 25,000 HP. Our configurations include our CP model with in line servo cylinder, a D model with a double acting cylinder in the propeller hub, pictured to the left and an E model with a single crank within the propeller hub.  

PSI has Fixed Pitch Propeller and Controllable Pitch Propeller Thrusters from 25 to 1500 hp. The PSI Mini Thrusters are fixed pitch and run 10-inch to 24-inch and 25 to 112 hp.  The Mini Thrusters are hydraulically driven via a HPU or PTO driven pump. The larger thrusters up to 1500 hp are driven via direct electric motor or diesel engine. 

PSI designs and manufactures custom electric and pneumatic PTO units for the forward or rear ends of your engine. We have a variaty of proven and very reliable designs. These designs can be easily adapted to your application. PSI can also assist you if your current PTO is not adapted correctly to your engine or has a higher than expected failiure rate.

PSI automation can be found on various types of vessels around the
world. Work boats, Coast Guard inspected cargo ships, Military, fishing vessels
and even yachts rely on our engineering expertise.

Over the years our team gathered valuable experience, implementing hundreds of 
marine control designs. Regardless of the propulsion concept or application, our engineers will find a reliable and cost effective solution for your vessel.

PSI offers hydraulic and pneumatic shaft brake options with pneumatic and electronic timing circuits for maximum safety, efficiency and reversing speed. 

PSI has the tooling and experience to conduct Inplace Machining of body fit coupling bolts, propeller hub dowels and much more with a ability to supply New ABS Certified bolts.