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Piana 37
Designer: B. Desray/Naval Force 3 Design  ·  Builder: Chantier Naval Force 3  ·  First built: 1992
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About the Piana 37

A French-built cruising sailboat, the Piana 37 represents the kind of capable bluewater design that emerged from European yards during the latter decades of the twentieth century. Designed with serious passage-making in mind, this vessel carries the hallmarks of a boat built to cover distance comfortably and reliably, making it a considered choice for sailors looking to venture beyond coastal waters into more demanding offshore environments. With limited detailed specifications widely available, the Piana 37 remains something of a quiet performer in the used sailboat market — the kind of boat that attracts experienced sailors who have done their homework rather than those drawn by flashy marketing. Its size places it in a practical range for shorthanded cruising couples or small crews, balancing interior liveability with manageable deck work. Prospective buyers researching the Piana 37 would be well served by seeking out existing owners and class communities, as firsthand accounts often reveal the most useful insights into build quality, systems reliability, and long-term seakeeping character. For those willing to dig deeper, it may prove a rewarding find.

Core Dimensions
LOA (Length Overall) 36.09 ft / 11.00 m
LWL (Waterline Length) 35.01 ft / 10.67 m
Beam 19.68 ft / 6.00 m
Max Draft 2.95 ft / 0.90 m
Displacement 9,921.00 lb / 4,500 kg
Design & Construction
Hull Type Catamaran Twin Keel
Rigging Type Frac. Sloop (Rotating Spar)
Construction Plywood-epoxy
Designer B. Desray/Naval Force 3 design
Builder Chantier Naval Force 3
First Built 1992
Owner Reviews

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Performance Ratios
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
103.21
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
8.14
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
3.67
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. 7.93 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. 14.76 pounds/inch
Rig Dimensions
I (Foretriangle Height) 22.04
P (Mainsail Luff) 634.00 ft² / 58.90 m²
E (Mainsail Foot) Diesel X2
Engine & Accommodations
Fuel Capacity 24 gals / 91 L
Water Capacity 106 gals / 401 L
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