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Luth
Designer: Costantini  ·  Builder: Costantini  ·  First built: 1970
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About the Luth

Sailing enthusiasts seeking detailed information about the Luth sailboat will find themselves navigating relatively uncharted waters, as comprehensive specifications for this vessel remain elusive in marine databases. This scarcity of readily available technical data suggests the Luth may represent either a limited production model, a regional builder's offering, or perhaps a design that didn't achieve widespread market penetration. Without detailed performance specifications or construction details to draw upon, potential buyers should approach research of the Luth with particular diligence. The limited documentation available makes it challenging to definitively categorize this boat's intended sailing applications or assess its suitability for specific maritime activities. For those considering a Luth, direct contact with previous owners, marine surveyors familiar with the model, or specialized sailing forums may yield more substantial insights than traditional specification databases. The boat's design origins, construction quality, and sailing characteristics would require hands-on evaluation or consultation with maritime professionals who have encountered this particular model. This research approach becomes especially important when considering any vessel with limited available documentation, as firsthand experience often proves more valuable than published specifications.

Core Dimensions
LOA (Length Overall) 26.90 ft / 8.20 m
LWL (Waterline Length) 19.13 ft / 5.83 m
Beam 8.92 ft / 2.72 m
Max Draft 4.59 ft / 1.40 m
Displacement 3,748.00 lb / 1,700 kg
Ballast 1,764.00 lb / 800 kg
Sail Area (Reported) 366.00 ft² / 34.00 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Costantini
Builder Costantini
First Built 1970
Owner Reviews

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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
24.34
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
14.63
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
2.3
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. 5.86
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. 609.71
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