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Sailboat Specifications

Horizon Day Cat 20 Com Pac

Gaff Head Cat · Keel/Cbrd.

Designed by H.herreshoff · Built by Com-Pac Yachts (Usa) · First built 2003

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LOA 20.00 ft  ·  Beam 8.33 ft  ·  Displacement 2,500.00 lb  ·  Sail Area 205.00 ft²  ·  Gaff Head Cat  ·  Keel/Cbrd.
About the Horizon Day Cat 20 Com Pac Sailboat

Built by Com-Pac Yaghts from 2003 onward, this distinctive 20-footer showcases the timeless gaff-rigged catboat design refined by legendary naval architect H. Herreshoff. The Horizon Day Cat 20 delivers classic sailing character in a modern fiberglass package, featuring the traditional single-masted gaff rig that defines the catboat heritage. With its generous 8.33-foot beam and shallow 5-foot draft keel/centerboard configuration, this boat excels in coastal waters, protected bays, and shallow cruising grounds where deeper-draft vessels cannot venture. The gaff-rigged sail plan provides 205 square feet of working sail area, offering excellent light-air performance and the authentic feel of traditional sailing. At 2,500 pounds displacement with 600 pounds of ballast, the design prioritizes stability and ease of handling over ultimate speed. The comfort ratio of 12.45 indicates a motion that favors relaxed sailing over racing performance, while the capsize screening value of 2.46 suggests good initial stability for protected water sailing. This boat appeals to sailors seeking the romance and simplicity of traditional catboat sailing with modern construction reliability. It's ideally suited for day sailing, gunkholing, and casual coastal exploration where shallow water access and classic aesthetics matter more than racing performance.

Dimensions & Specifications
LOA (Length Overall) 20.00 ft / 6.10 m
LWL (Waterline Length) 17.75 ft / 5.41 m
Beam 8.33 ft / 2.54 m
Max Draft 5.00 ft / 1.52 m
Min Draft 2.16 ft / 0.66 m
Displacement 2,500.00 lb / 1,134 kg
Ballast 600.00 lb / 272 kg
Sail Area (Reported) 205.00 ft² / 19.05 m²
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Gaff head Cat
Construction FG
Designer H.Herreshoff
Builder Com-Pac Yachts (USA)
First Built 2003
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Frequently Asked Questions

What is the Horizon Day Cat 20 Com Pac's sail area to displacement ratio?

The Horizon Day Cat 20 Com Pac has a Sail Area to Displacement ratio (SA/D) of 17.85. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Horizon Day Cat 20 Com Pac's comfort ratio?

The Horizon Day Cat 20 Com Pac has a Ted Brewer Comfort Ratio of 12.45. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Horizon Day Cat 20 Com Pac safe for offshore sailing?

The Horizon Day Cat 20 Com Pac has a Capsize Screening Formula value of 2.46. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Horizon Day Cat 20 Com Pac?

The theoretical hull speed of the Horizon Day Cat 20 Com Pac is 5.65 kn knots, calculated from its waterline length.

How much does a Horizon Day Cat 20 Com Pac weigh?

The Horizon Day Cat 20 Com Pac has a displacement of 2,500.00 lb and a length overall (LOA) of 20.00 ft.

Who designed the Horizon Day Cat 20 Com Pac?

The Horizon Day Cat 20 Com Pac was designed by H.herreshoff, first built in 2003.