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Sailboat Specifications

Able 20

Masthead Sloop · Long Keel

Designed by W. R. Loughlin · Built by Loughlin Boat Works. (Usa) · First built 1972

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LOA 20.00 ft  ·  Beam 7.33 ft  ·  Displacement 2,500.00 lb  ·  Sail Area 202.00 ft²  ·  Masthead Sloop  ·  Long Keel
About the Able 20 Sailboat

Designed by W. R. Loughlin and built by Loughlin Boat Works beginning in 1972, this compact 20-footer represents classic American small boat design philosophy from the early 1970s. The Able 20's traditional long keel configuration and masthead sloop rig deliver steady, predictable sailing characteristics that make it particularly well-suited for coastal cruising and day sailing. With a displacement of 2,500 pounds and 1,000 pounds of ballast, this fiberglass cruiser offers substantial stability for its size. The long keel design provides excellent tracking and directional stability, though at the expense of quick tacking ability. The boat's beam of 7.33 feet creates a reasonably spacious cockpit while maintaining good performance under sail. The Able 20's comfort ratio of 15.81 indicates a relatively stiff, comfortable motion in moderate seas, while the capsize screening formula of 2.16 suggests reasonable stability for protected waters and near-coastal sailing. With 202 square feet of sail area driving the hull to a theoretical maximum speed of 5.36 knots, this boat prioritizes steady progress over pure speed. This design appeals to sailors seeking a traditional, forgiving boat for learning seamanship or enjoying relaxed coastal adventures.

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Dimensions & Specifications
LOA (Length Overall) 20.00 ft / 6.10 m
LWL (Waterline Length) 16.00 ft / 4.88 m
Beam 7.33 ft / 2.23 m
Max Draft 2.42 ft / 0.74 m
Displacement 2,500.00 lb / 1,134 kg
Ballast 1,000.00 lb / 454 kg
Ballast Type Lead
Sail Area (Reported) 202.00 ft² / 18.77 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction FG
Designer W. R. Loughlin
Builder Loughlin Boat Works. (USA)
First Built 1972
Associations Mystic Seaport Museum
Related Sailboats Cal 20 · Ranger 20 · Heritage 20 · Signet 20 · Santana 20
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Engine & Accommodations
Water Capacity 10 gals / 38 L
Frequently Asked Questions

What is the Able 20's sail area to displacement ratio?

The Able 20 has a Sail Area to Displacement ratio (SA/D) of 17.59. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Able 20's comfort ratio?

The Able 20 has a Ted Brewer Comfort Ratio of 15.81. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Able 20 safe for offshore sailing?

The Able 20 has a Capsize Screening Formula value of 2.16. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Able 20?

The theoretical hull speed of the Able 20 is 5.36 kn knots, calculated from its waterline length.

How much does a Able 20 weigh?

The Able 20 has a displacement of 2,500.00 lb and a length overall (LOA) of 20.00 ft.

Who designed the Able 20?

The Able 20 was designed by W. R. Loughlin, first built in 1972.