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Sailboat Specifications

Calkins 40

Masthead Sloop · Fin With Rudder On Skeg

Designed by Wendell H. Calkins · Built by American Marine Pte · First built 1963

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LOA 39.92 ft  ·  Beam 10.42 ft  ·  Displacement 18,000.00 lb  ·  Sail Area 751.00 ft²  ·  Masthead Sloop  ·  Fin With Rudder On Skeg
About the Calkins 40 Sailboat

With limited documentation available, the Calkins 40 represents one of the more elusive designs in the 40-foot sailboat category. This relative obscurity in the sailing world suggests it was likely produced in small numbers, making it a rare find for those seeking something distinctive on the water. Based on its 40-foot length, this boat would fall into the category suitable for serious coastal cruising and potentially limited offshore passages. Boats of this size typically offer a good balance between manageable handling for smaller crews and sufficient space for extended cruising comfort. The Calkins name, while not as widely recognized as some major production builders, indicates this was likely a custom or semi-custom design, suggesting attention to quality construction and potentially unique design characteristics. For prospective buyers encountering a Calkins 40, the limited available information means conducting a thorough survey becomes even more critical. The rarity factor could work both ways – while finding replacement parts or specific technical support might prove challenging, owning a lesser-known design offers the appeal of sailing something truly uncommon. Anyone considering this boat should focus heavily on the individual vessel's condition and maintenance history rather than relying on fleet-wide reputation data.

Dimensions & Specifications
LOA (Length Overall) 39.92 ft / 12.17 m
LWL (Waterline Length) 35.00 ft / 10.67 m
Beam 10.42 ft / 3.18 m
Max Draft 6.42 ft / 1.96 m
Displacement 18,000.00 lb / 8,165 kg
Ballast 5,000.00 lb / 2,268 kg
Sail Area (Reported) 751.00 ft² / 69.77 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction Wood (strip planked mahogany)
Designer Wendell H. Calkins
Builder American Marine PTE
First Built 1963
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Engine & Accommodations
Horsepower 30
Fuel Capacity 72
Water Capacity 90
Frequently Asked Questions

What is the Calkins 40's sail area to displacement ratio?

The Calkins 40 has a Sail Area to Displacement ratio (SA/D) of 17.56. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Calkins 40's comfort ratio?

The Calkins 40 has a Ted Brewer Comfort Ratio of 33.62. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Calkins 40 safe for offshore sailing?

The Calkins 40 has a Capsize Screening Formula value of 1.59. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Calkins 40?

The theoretical hull speed of the Calkins 40 is 7.93 knots, calculated from its waterline length.

How much does a Calkins 40 weigh?

The Calkins 40 has a displacement of 18,000.00 lb and a length overall (LOA) of 39.92 ft.

Who designed the Calkins 40?

The Calkins 40 was designed by Wendell H. Calkins, first built in 1963.