The ClassX 18 Family Features


The ClassX 18 Family come from a venerable line of eighteen foot boats with a proven racing heritage -- there is no substitute for experience. Why eighteen feet? Step in one and see how it feels. It's a personal thing. This is a no-nonsence, get-there-quick, look-good sport boat.

Want to humble a tournament skier? Toss them a rope, . . .then nail it. Guaranteed! 90% have never experience the acceleration. Period.

Instant thrust on demand is the key. A marine jet propulsion system can produce (for all practical purposes) instant max-thrust in just about the time it takes for the engine to rev to red-line rpm under a no-load condition. This is because the mix-flow pump absorbs very little horsepower at low RPM's; consequently, the engine is free to quickly rev to the horsepower absorption point dictated by the jet drive's impeller charactristic. This is unlike the slow spool-up typical of an open (i.e., unducted) propeller in water. To learn more about the characteristics of marine jet propulsion, click here.

The ClassX 18 Family is a line of wind-in-your-face sport boats. If fishing is your priority, check out our ClassX 18 Flat-Top Fish & Ski. Call us for more information!

ClassX 18 Legend: Hull Wire Diagram Model
SE ISO View below Shear-Line (deck removed). Fuel tanks and main stringers illustrated.
Frame cross-sections forward of station 13 are approximations.

Right Profile View
Below Shear-Line (deck removed). Fuel tanks and main stringers illustrated.
Portrays the approximate location of the 350 PFI engine installation
relative to an installed American Turbine SD350 jet drive.

Close-up view of engine installation.

Front View Hull, Engine, Stringers, and Tanks
Installed height of engine may be lower in final configuration relative to location of installed AT SD309 jet drive.

Arc (at transom station-18) through exhaust risers, is approximate envelope of proposed engine hatch cover. The final design and cross-sectional profile will be based on engine configuration with low profile exhaust system and mufflers.


All text and graphics,
copyright © WaterMark Marine Industries, Inc.,
Little Rock, Arkansas, 2002.

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