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Sailboat Specifications

Cape Dory 300 Ms

Masthead Sloop · Long Keel

Designed by Clive M. Dent · Built by Cape Dory Yachts (Usa) · First built 1985

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LOA 29.85 ft  ·  Beam 11.42 ft  ·  Displacement 11,500.00 lb  ·  Sail Area 442.00 ft²  ·  Masthead Sloop  ·  Long Keel
About the Cape Dory 300 Ms Sailboat

Built during Cape Dory's golden era from 1985 to 1990, this masthead sloop represents the yard's commitment to traditional cruising values with modern construction techniques. Designer Clive M. Dent created a robust coastal cruiser that emphasizes seaworthiness over speed, evident in the boat's substantial 11,500-pound displacement and conservative sail plan of 442 square feet. The 300 Ms features Cape Dory's characteristic long keel configuration, providing excellent directional stability and a forgiving helm in challenging conditions. With a moderate draft of 3.92 feet, she can access many harbors while maintaining the tracking ability that long-keel designs are prized for. The generous beam of 11.42 feet creates a stable platform and spacious accommodations below. Her impressive comfort ratio of 25.22 and conservative capsize screening value of 2.03 indicate exceptional seaworthiness, making this an ideal choice for serious coastal cruising and short offshore passages. The 46-horsepower engine provides reliable auxiliary power when needed. With only 47 hulls produced, the 300 Ms represents an exclusive entry in Cape Dory's respected lineup, appealing to sailors who prioritize safety, comfort, and traditional sailing characteristics over racing performance.

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Dimensions & Specifications
LOA (Length Overall) 29.85 ft / 9.10 m
LWL (Waterline Length) 26.50 ft / 8.08 m
Beam 11.42 ft / 3.48 m
Max Draft 3.92 ft / 1.19 m
Displacement 11,500.00 lb / 5,216 kg
Ballast 4,500.00 lb / 2,041 kg
Ballast Type Lead
Sail Area (Reported) 442.00 ft² / 41.06 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction FG
Designer Clive M. Dent
Builder Cape Dory Yachts (USA)
First Built 1985
Last Built 1990
Number Built 47
Associations Cape Dory Sailboat Owners Association
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Engine & Accommodations
Engine Make Westerbeke
Engine Model W-46
Engine Type Diesel
Horsepower 46
Fuel Capacity 50 gals / 189 L
Water Capacity 75 gals / 284 L
Frequently Asked Questions

What is the Cape Dory 300 Ms's sail area to displacement ratio?

The Cape Dory 300 Ms has a Sail Area to Displacement ratio (SA/D) of 13.93. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Cape Dory 300 Ms's comfort ratio?

The Cape Dory 300 Ms has a Ted Brewer Comfort Ratio of 25.22. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Cape Dory 300 Ms safe for offshore sailing?

The Cape Dory 300 Ms has a Capsize Screening Formula value of 2.03. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Cape Dory 300 Ms?

The theoretical hull speed of the Cape Dory 300 Ms is 6.90 kn knots, calculated from its waterline length.

How much does a Cape Dory 300 Ms weigh?

The Cape Dory 300 Ms has a displacement of 11,500.00 lb and a length overall (LOA) of 29.85 ft.

Who designed the Cape Dory 300 Ms?

The Cape Dory 300 Ms was designed by Clive M. Dent, first built in 1985.