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Etap 37S
Designer: Mortain & Mavrikios  ·  Builder: Etap Yachting (Bel)  ·  First built: 2003
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About the Etap 37S

Belgian builder Etap Yachting introduced the 37S in 2003 as a versatile cruising yacht designed by the naval architecture team of Mortain & Mavrikios. This 37-foot sloop combines European craftsmanship with practical design elements that appeal to both coastal cruisers and weekend sailors seeking comfort and performance. The yacht's fiberglass construction features a polyurethane core, providing excellent strength-to-weight characteristics while maintaining the quality standards Etap is known for throughout Europe. At 13,999 pounds displacement with 4,409 pounds of ballast, the 37S offers a reassuring feel underfoot while remaining responsive in varying wind conditions. Notable design features include a wing keel configuration that reduces draft to just 6.40 feet while maintaining stability, making the boat suitable for exploring shallow anchorages and coastal waters. The fractional sloop rig with 825 square feet of sail area delivers respectable performance, with the sail area to displacement ratio indicating good light-air capability. With a comfort ratio of 21.84, the 37S leans toward the comfortable cruising end of the spectrum rather than aggressive racing, while the capsize screening value of 2.1 suggests reasonable offshore capability for experienced crews. The efficient hull design achieves a theoretical hull speed of 7.64 knots, powered by a reliable 28-horsepower auxiliary engine.

Core Dimensions
LOA (Length Overall) 36.94 ft / 11.26 m
LWL (Waterline Length) 32.48 ft / 9.90 m
Beam 12.63 ft / 3.85 m
Max Draft 6.40 ft / 1.95 m
Displacement 13,999.00 lb / 6,350 kg
Ballast 4,409.00 lb / 2,000 kg
Sail Area (Reported) 825.00 ft² / 76.65 m²
Design & Construction
Hull Type Wing Keel
Rigging Type Fractional Sloop
Construction FG (poly. core)
Designer Mortain & Mavrikios
Builder Etap Yachting (BEL)
First Built 2003
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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
22.81
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
31.5
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
182.39
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
21.84
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
2.1
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. 7.64 kn
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. 1,465.77 pounds/inch
Rig Dimensions
Mast Height (DWL) 56.60 ft / 17.25 m
Engine & Accommodations
Engine Make Volvo
Engine Type Diesel
Horsepower 28
Fuel Capacity 31 gals / 117 L
Water Capacity 66 gals / 250 L
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