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Heritage 1 Ton
Designer: Charles Morgan  ·  Builder: Heritage Yacht Corp. (Usa)  ·  First built: 1975
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About the Heritage 1 Ton

Designed by renowned naval architect Charles Morgan in the mid-1970s, this 37-foot sailboat represents a focused effort to create a competitive one-ton racing yacht during the heyday of the International Offshore Rule. Heritage Yacht Corp. produced just 20 examples between 1975 and the early 1980s, making this a relatively rare find in today's market. The boat's fin keel and spade rudder configuration, combined with its moderate displacement of 13,628 pounds, reflects the racing-oriented design philosophy of its era. With a comfort ratio of 25.07, this yacht falls into the moderate range, suggesting it can handle offshore conditions while still prioritizing performance. The capsize screening formula of 2.01 indicates reasonable stability for coastal and offshore sailing, though crew experience is essential for safe operation in challenging conditions. Morgan's design emphasizes speed and responsiveness, with clean lines and efficient sail handling characteristics typical of IOR-era racers. The masthead sloop rig provides versatility for both racing and recreational sailing. While originally conceived for racing, these yachts have proven capable cruisers for experienced sailors who appreciate the boat's sailing performance and solid fiberglass construction. Today, they appeal to sailors seeking a classic design with spirited sailing characteristics.

Core Dimensions
LOA (Length Overall) 37.00 ft / 11.28 m
LWL (Waterline Length) 28.00 ft / 8.53 m
Beam 12.00 ft / 3.66 m
Max Draft 6.50 ft / 1.98 m
Displacement 13,628.00 lb / 6,182 kg
Ballast Type Lead
Sail Area (Reported) 653.00 ft² / 60.67 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Charles Morgan
Builder Heritage Yacht Corp. (USA)
First Built 1975
Number Built 20
Associations One Ton Class
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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
 18.38
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
 277.15
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
 25.07
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
 2.01
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. 7.09 kn
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
 2.04
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. 1,200.56 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 18.35
Rig Dimensions
I (Foretriangle Height) 50.00 ft / 15.24 m
J (Foretriangle Base) 15.50 ft / 4.72 m
P (Mainsail Luff) 45.00 ft / 13.72 m
E (Mainsail Foot) 11.75 ft / 3.58 m
SA Fore 387.50 ft² / 36.00 m²
SA Main 264.38 ft² / 24.56 m²
SA Total (100%) 651.88 ft² / 60.56 m²
Est. Forestay Length 52.35 ft / 15.96 m
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