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Sailboat Specifications

S Class Herreshoff

Fractional Sloop · Fin Keel

Designed by N. Herreshoff · Built by Herreshoff Manufacturing Co.(Usa) · First built 1919

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LOA 27.50 ft  ·  Beam 7.17 ft  ·  Displacement 6,750.00 lb  ·  Sail Area 431.00 ft²  ·  Fractional Sloop  ·  Fin Keel
About the S Class Herreshoff Sailboat

Built between 1919 and 1941 by the legendary Herreshoff Manufacturing Company, this elegant 27.5-foot sloop represents classic American yacht design at its finest. Nathanael Herreshoff's creation embodies the perfect balance between performance and seaworthiness that made the "Wizard of Bristol" famous worldwide. With its traditional wood-planked hull and fin keel configuration, the S Class delivers impressive sailing characteristics for both competitive racing and coastal cruising. The fractional sloop rig provides excellent sail handling, while the generous ballast-to-displacement ratio of nearly 50% ensures solid stability and confident performance in challenging conditions. At 6,750 pounds displacement, she's substantial enough for serious offshore work yet responsive enough for spirited day sailing. The design's moderate beam and fine entry create an efficient hull form that moves easily through the water, making her well-suited for both club racing and extended coastal passages. Her comfort ratio of 33.45 suggests excellent motion characteristics, while the low capsize screening value indicates exceptional stability margins. Only 95 examples were built during the model's 22-year production run, making surviving S Class yachts highly sought after by collectors and sailing enthusiasts who appreciate authentic Herreshoff craftsmanship and timeless design principles.

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Dimensions & Specifications
LOA (Length Overall) 27.50 ft / 8.38 m
LWL (Waterline Length) 20.50 ft / 6.25 m
Beam 7.17 ft / 2.19 m
Max Draft 4.75 ft / 1.45 m
Displacement 6,750.00 lb / 3,062 kg
Ballast 3,350.00 lb / 1,520 kg
Ballast Type Lead
Sail Area (Reported) 431.00 ft² / 40.04 m²
Design & Construction
Hull Type Fin Keel
Rigging Type Fractional Sloop
Construction Wood planked
Designer N. Herreshoff
Builder Herreshoff Manufacturing Co.(USA)
First Built 1919
Last Built 1941
Number Built 95
Associations Herreshoff Marine Museum
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Frequently Asked Questions

What is the S Class Herreshoff's sail area to displacement ratio?

The S Class Herreshoff has a Sail Area to Displacement ratio (SA/D) of 19.37. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the S Class Herreshoff's comfort ratio?

The S Class Herreshoff has a Ted Brewer Comfort Ratio of 33.45. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the S Class Herreshoff safe for offshore sailing?

The S Class Herreshoff has a Capsize Screening Formula value of 1.52. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the S Class Herreshoff?

The theoretical hull speed of the S Class Herreshoff is 6.07 kn knots, calculated from its waterline length.

How much does a S Class Herreshoff weigh?

The S Class Herreshoff has a displacement of 6,750.00 lb and a length overall (LOA) of 27.50 ft.

Who designed the S Class Herreshoff?

The S Class Herreshoff was designed by N. Herreshoff, first built in 1919.