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Dragonfly 25
Designer: Børge Quorning  ·  Builder: Quorning Boats (Den)  ·  First built: 1981
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About the Dragonfly 25

Danish innovation meets high-performance sailing in this distinctive trimaran that revolutionized the small multihull market. Designed by Børge Quorning in the late 1990s, this folding trimaran quickly gained recognition for its unique ability to transform from a trailerable package into a fast, stable sailing platform. The boat's most remarkable feature is its innovative folding system, which allows the outer hulls to fold inward against the main hull for easy trailering and marina storage. This engineering marvel solved the traditional multihull challenge of finding suitable slip space while maintaining excellent sailing performance on the water. Built primarily for coastal cruising and weekend adventures, the Dragonfly 25 delivers impressive speed and stability that appeals to sailors seeking multihull performance without the complexity of larger trimarans. The spacious cockpit and reasonable accommodations make it suitable for day sailing and short overnight trips. Quorning's design philosophy emphasized simplicity and reliability, resulting in a boat that's approachable for sailors transitioning from monohulls while offering genuine multihull excitement. The model established Dragonfly as a respected name in the folding trimaran market, paving the way for the company's larger, more elaborate designs that followed.

Core Dimensions
LOA (Length Overall) 25.25 ft / 7.70 m
Beam 19.67 ft / 6.00 m
Max Draft 4.58 ft / 1.40 m
Displacement 1,500.00 lb / 680 kg
Design & Construction
Hull Type Trimaran Dbrd.
Rigging Type Frac. Sloop (Rotating Spar)
Construction FG
Designer Børge Quorning
Builder Quorning Boats (DEN)
First Built 1981
Number Built 200
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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
67.73
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
1.93
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
6.88
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. 6.21 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. 9.05 pounds/inch
Rig Dimensions
I (Foretriangle Height) 1.08 ft / 0.33 m
P (Mainsail Luff) 311.00 ft² / 28.89 m²
E (Mainsail Foot) Quorning Boats
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