Propulsion Systems, Inc.

Servicing over 300 PSI Controllable Pitch Propellers installations is our mainstay. We provide highly trained and experienced Service Technicians, Seal Kits and Repair Kits for each individual installation and provide repair parts on expedited basis for all our valued customers. PSI manufacturered 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 manufactured Fixed Pitch Propeller and Controllable Pitch Propeller Thrusters from 25 to 1500 hp. As with our CPP installations PSI maintains stock of all Seal Kits and Repair Kits for all models. The PSI Mini Thrusters are fixed pitch and range in size from 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. 

We machine Rudder stocks, shaft barring, flanges, flange bolts and dowel pins. Out of the need to have the right tools to be efficient, we make our own fixtures and machines. If you have an challenging in place machining project, PSI can help.