 The ClassX 18's are equiped with the American Turbine SD-309 pump. This is a fifth generation marine water-jet propulsion system. This Super Duty marine jet unit is designed for light weight planing craft, powered by gasoline engines capable of operating in a maximum RPM range 1000 to 5000+. Efficient crusing performance can be achieved by coupling with a 350 CID PFI engine that can product 358 lb-ft @ 3200 rpm while generating approximately 175 horsepower. The pump assembly can easily handle peak horsepower in excess of 500 bhp without additional modification. |
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The jet drive assembly is installed in an aft, semi-outboard configuration. There are several advantages to this technique:
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