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Sailboat Specifications

Seguin 48

Masthead Sloop · Keel/Cbrd.

Designed by Craig Walters · Built by Lyman Morse Boatbuilding (Usa) · First built 1986

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LOA 48.67 ft  ·  Beam 13.75 ft  ·  Displacement 26,300.00 lb  ·  Sail Area 1,170.00 ft²  ·  Masthead Sloop  ·  Keel/Cbrd.
About the Seguin 48 Sailboat

Designed by Craig Walters and built by the respected Lyman Morse Boatbuilding yard in Maine, this substantial cruising sailboat represents quality American craftsmanship from the mid-1980s. The fiberglass construction combines traditional aesthetic appeal with modern durability, reflecting Lyman Morse's reputation for building robust, seaworthy vessels. With nearly 49 feet of overall length and a generous beam of 13.75 feet, the Seguin 48 offers spacious accommodations while maintaining excellent sailing characteristics. The deep 9.25-foot draft and substantial ballast-to-displacement ratio provide exceptional stability and windward performance, making this yacht well-suited for serious offshore cruising and extended passages. The masthead sloop rig delivers impressive sail-carrying ability, while the moderate displacement design strikes an effective balance between comfort and performance. Her comfort ratio of 30.33 indicates a motion that's manageable in seaway conditions, and the low capsize screening value demonstrates inherent stability and safety margins that offshore sailors demand. This combination of thoughtful design, quality construction, and proven seaworthiness makes the Seguin 48 an excellent choice for experienced sailors seeking a capable bluewater cruiser with the pedigree of one of America's most respected boatbuilders.

Dimensions & Specifications
LOA (Length Overall) 48.67 ft / 14.83 m
LWL (Waterline Length) 37.50 ft / 11.43 m
Beam 13.75 ft / 4.19 m
Max Draft 9.25 ft / 2.82 m
Min Draft 4.92 ft / 1.50 m
Displacement 26,300.00 lb / 11,929 kg
Ballast 10,500.00 lb / 4,763 kg
Ballast Type Lead
Sail Area (Reported) 1,170.00 ft² / 108.70 m²
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Masthead Sloop
Construction FG
Designer Craig Walters
Builder Lyman Morse Boatbuilding (USA)
First Built 1986
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Frequently Asked Questions

What is the Seguin 48's sail area to displacement ratio?

The Seguin 48 has a Sail Area to Displacement ratio (SA/D) of 21.25. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Seguin 48's comfort ratio?

The Seguin 48 has a Ted Brewer Comfort Ratio of 30.33. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Seguin 48 safe for offshore sailing?

The Seguin 48 has a Capsize Screening Formula value of 1.85. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Seguin 48?

The theoretical hull speed of the Seguin 48 is 8.21 kn knots, calculated from its waterline length.

How much does a Seguin 48 weigh?

The Seguin 48 has a displacement of 26,300.00 lb and a length overall (LOA) of 48.67 ft.

Who designed the Seguin 48?

The Seguin 48 was designed by Craig Walters, first built in 1986.