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Sailboat Specifications

Alpha Cat 18

Frac. Sloop (Rotating Spar) · Catamaran Twin Dbrd.

Designed by Tom Roland · Built by Glastron (Usa) · First built 1970

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LOA 18.00 ft  ·  Beam 10.00 ft  ·  Displacement 300.00 lb  ·  Sail Area 244  ·  Frac. Sloop (Rotating Spar)  ·  Catamaran Twin Dbrd.
About the Alpha Cat 18 Sailboat

With limited specifications available, the Alpha Cat 18 represents a more obscure entry in the 18-foot sailboat category, making detailed research challenging for prospective buyers. This boat appears to fall into the small recreational sailing segment, likely designed for day sailing and light coastal cruising given its compact size. The 18-foot length suggests this vessel would be well-suited for sailors seeking an accessible boat for weekend adventures, sailing instruction, or those working with limited dock space and storage options. Boats in this size range typically offer a good balance of manageable handling characteristics while providing enough room for a small crew to enjoy comfortable day trips. Without extensive specification data, potential owners should focus their research on hands-on inspections and sea trials to evaluate the boat's construction quality, sailing characteristics, and overall condition. The Alpha Cat 18's relative obscurity in the market may present both challenges and opportunities – while finding parts or expert knowledge might prove difficult, it could also represent a unique find for sailors interested in less common designs. Prospective buyers should carefully assess the boat's intended use against their sailing goals and consider the availability of local support and parts.

Dimensions & Specifications
LOA (Length Overall) 18.00 ft / 5.49 m
Beam 10.00 ft / 3.05 m
Max Draft 2.00 ft / 0.61 m
Min Draft 0.5
Displacement 300.00 lb / 136 kg
Sail Area (Reported) 244
Design & Construction
Hull Type Catamaran Twin Dbrd.
Rigging Type Frac. Sloop (Rotating Spar)
Construction FG
Designer Tom Roland
Builder Glastron (USA)
First Built 1970
Related Sailboats Hobie 18 · Prindle 18 · Dart 18 · Prindle 18 2 · Hobie 18 Magnum
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Frequently Asked Questions

What is the Alpha Cat 18's sail area to displacement ratio?

The Alpha Cat 18 has a Sail Area to Displacement ratio (SA/D) of 87.21. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Alpha Cat 18's comfort ratio?

The Alpha Cat 18 has a Ted Brewer Comfort Ratio of 1.33. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Alpha Cat 18 safe for offshore sailing?

The Alpha Cat 18 has a Capsize Screening Formula value of 5.98. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Alpha Cat 18?

The theoretical hull speed of the Alpha Cat 18 is 5.24 kn knots, calculated from its waterline length.

How much does a Alpha Cat 18 weigh?

The Alpha Cat 18 has a displacement of 300.00 lb and a length overall (LOA) of 18.00 ft.

Who designed the Alpha Cat 18?

The Alpha Cat 18 was designed by Tom Roland, first built in 1970.