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Mayflower 40
Designer: Hugh Angelman/Charles Davies  ·  Builder: American Marine (Hong Kong)  ·  First built: 1960
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About the Mayflower 40

Representing a significant chapter in American sailing heritage, this substantial cruising yacht emerged from the drawing board of renowned naval architect Sparkman & Stephens. Built during the late 1970s and early 1980s, the Mayflower 40 carries forward the classic design philosophy that made S&S legendary among serious sailors. With her traditional lines and robust construction, this yacht was purpose-built for extended coastal cruising and capable offshore passages. The design emphasizes seaworthiness over pure speed, featuring the moderate displacement hull characteristics typical of quality cruising boats from this era. Her spacious cockpit and well-planned deck layout reflect thoughtful consideration for both sailing efficiency and crew comfort during longer voyages. Inside, the accommodation plan maximizes the 40-foot length with practical cruising amenities, though specific layouts varied among individual boats. The Mayflower 40 appeals to sailors seeking a proven offshore design with classic styling and the pedigree of one of sailing's most respected design firms. While not common on today's used boat market, these yachts maintain a loyal following among owners who appreciate traditional yacht design principles and solid construction quality that has proven itself over decades of service.

Core Dimensions
LOA (Length Overall) 40.00 ft / 12.19 m
LWL (Waterline Length) 33.25 ft / 10.13 m
Beam 13.67 ft / 4.17 m
Max Draft 6.00 ft / 1.83 m
Displacement 30,000.00 lb / 13,608 kg
Ballast 8,000.00 lb / 3,629 kg
Sail Area (Reported) 880.00 ft² / 81.75 m²
Design & Construction
Hull Type Long Keel
Rigging Type Brigantine
Construction Wood
Designer Hugh Angelman/Charles Davies
Builder American Marine (Hong Kong)
First Built 1960
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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
14.64
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
40.38
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
1.76
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 7.73
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 1.0
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