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Endeavour 52
Designer: Johan Valentijn  ·  Builder: Endeavour International Inc. (Usa)  ·  First built: 1989
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About the Endeavour 52

Designed by renowned naval architect Johan Valentijn, this impressive 52-footer represents a compelling blend of cruising comfort and sailing performance from the early 1990s. Built by Endeavour International between 1989 and 1992, the Endeavour 52 features Valentijn's signature approach to creating vessels that excel in both coastal and offshore sailing scenarios. The yacht's substantial 35,000-pound displacement and generous 15-foot beam provide exceptional stability and interior volume, while the wing keel configuration offers improved performance and reduced draft at 5.50 feet—ideal for accessing shallow anchorages without sacrificing sailing ability. The masthead sloop rig carries 1,110 square feet of sail area, delivering respectable performance with a theoretical hull speed of 8.71 knots. With a comfort ratio of 32.44, this yacht prioritizes seaworthiness and motion comfort over pure speed, making it an excellent choice for extended cruising and offshore passages. The conservative capsize screening formula of 1.84 underscores its blue-water capabilities. Powered by an 88-horsepower engine, the Endeavour 52 offers reliable auxiliary power for challenging conditions or marina maneuvering. This design represents Valentijn's understanding of what serious cruising sailors need: a robust, well-balanced yacht capable of handling diverse sailing conditions with confidence.

Core Dimensions
LOA (Length Overall) 52.33 ft / 15.95 m
LWL (Waterline Length) 42.25 ft / 12.88 m
Beam 15.00 ft / 4.57 m
Max Draft 5.50 ft / 1.68 m
Displacement 35,000.00 lb / 15,876 kg
Ballast 14,500.00 lb / 6,577 kg
Sail Area (Reported) 1,110.00 ft² / 103.12 m²
Design & Construction
Hull Type Wing Keel
Rigging Type Masthead Sloop
Construction FG
Designer Johan Valentijn
Builder Endeavour International Inc. (USA)
First Built 1989
Last Built 1992
Associations Endeavour Sailboat Owners
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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
 16.67
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 41.43
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
 207.18
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
 32.44
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
 1.84
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. 8.71 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
 2.58
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. 2,264.46 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. 16.66
Rig Dimensions
I (Foretriangle Height) 59.42 ft / 18.11 m
J (Foretriangle Base) 21.58 ft / 6.58 m
P (Mainsail Luff) 52.00 ft / 15.85 m
E (Mainsail Foot) 18.00 ft / 5.49 m
SA Fore 641.14 ft² / 59.56 m²
SA Main 468.00 ft² / 43.48 m²
SA Total (100%) 1,109.14 ft² / 103.04 m²
Est. Forestay Length 63.22 ft / 19.27 m
Mast Height (DWL) 66.42 ft / 20.24 m
Engine & Accommodations
Engine Type Diesel
Horsepower 88
Fuel Capacity 285 gals / 1,079 L
Water Capacity 280 gals / 1,060 L
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