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Ufo 34
Designer: Holman & Pye  ·  Builder: Colvic Craft  ·  First built: 1973
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About the Ufo 34

Designed as a capable and versatile offshore cruiser-racer, the Ufo 34 earned a following among sailors seeking a responsive, well-balanced boat that could perform competently in both competitive and leisure sailing contexts. Italian in origin, the design reflects a Mediterranean sensibility — a blend of lively performance and practical cruising functionality that made it an appealing choice for coastal passages and offshore adventures alike. With a hull shape oriented toward speed and stability, the Ufo 34 suits sailors who want a boat that rewards good seamanship without demanding constant attention. Its proportions suggest a comfortable cockpit layout and manageable sail plan, making it accessible to short-handed crews while still offering enough performance to satisfy enthusiasts who enjoy pushing their vessel in varied conditions. While detailed specification data is limited, the Ufo 34 has developed a modest but loyal following, particularly in European sailing circles. Buyers considering this boat should focus on hull condition, standing rigging, and the quality of any updates made by previous owners. For those drawn to classic Italian design with genuine offshore potential, the Ufo 34 remains a compelling option worth investigating.

Core Dimensions
LOA (Length Overall) 33.33 ft / 10.16 m
LWL (Waterline Length) 28.08 ft / 8.56 m
Beam 11.00 ft / 3.35 m
Max Draft 5.50 ft / 1.68 m
Displacement 10,214.00 lb / 4,633 kg
Ballast 5,510.00 lb / 2,499 kg
Sail Area (Reported) 511.00 ft² / 47.47 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Holman & Pye
Builder Colvic Craft
First Built 1973
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
 17.43
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
 21.83
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
 2.03
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. 7.1
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
 2.69
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. 1.0
Rig Dimensions
I (Foretriangle Height) 43.6
J (Foretriangle Base) 14.14
P (Mainsail Luff) 38.29
E (Mainsail Foot) 10.6
SA Fore 308.25
SA Main 202.94
Find a Ufo 34 For Sale
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