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Ixylon
Designer: Ulrich Czerwonka  ·  Builder: Veb Yachtwerft / Btm Marine (Ger)  ·  First built: 1970
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About the Ixylon

Originally designed by Ulrich Czerwonka in 1970, this German-built sailboat represents a thoughtful approach to small boat design that resonated with sailors across Europe. With 5,500 units produced by Veb Yachtwerft and BTM Marine, the Ixylon earned recognition as a reliable and accessible sailing platform during its production years. The boat's twin daggerboard configuration offers excellent shallow water capability while maintaining good upwind performance, making it particularly well-suited for coastal sailing, lake cruising, and protected water exploration. At just under 17 feet, the fiberglass construction provides durability without excessive weight, contributing to responsive handling and easy trailering. The fractional sloop rig delivers a balanced sail plan that's manageable for single-handed sailing while providing enough power for spirited performance. With a sail area to displacement ratio of 47.43, the boat offers lively sailing characteristics that appeal to both recreational sailors and those interested in club racing. The capsize screening formula of 3.28 indicates good stability for coastal conditions. This design excels as a day sailor and weekend cruiser, offering an ideal introduction to sailing for new enthusiasts while maintaining enough performance to keep experienced sailors engaged in protected waters.

Core Dimensions
LOA (Length Overall) 16.73 ft / 5.10 m
Beam 5.91 ft / 1.80 m
Max Draft 2.69 ft / 0.82 m
Min Draft 0.59 ft / 0.18 m
Displacement 374.79 lb / 170 kg
Sail Area (Reported) 153.92 ft² / 14.30 m²
Design & Construction
Hull Type Twin Daggerboards
Rigging Type Fractional Sloop
Construction FG
Designer Ulrich Czerwonka
Builder VEB Yachtwerft / BTM Marine (GER)
First Built 1970
Number Built 5500
Associations Ixylon Class Association (Germany)
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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
58.18
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
3.61
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. 5.05 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. 1.8 pounds/inch
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