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Class 4
Designer: Erik Lerouge  ·  Builder: O Yachts (Latvia)  ·  First built: 2012
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About the Class 4

Built for competitive one-design racing, this sleek sailboat represents a classic approach to small boat competition sailing. The Class 4 emerged from an era when simplicity and sailor skill took precedence over complex boat systems, making it an excellent platform for developing racing fundamentals. With its clean lines and purpose-built design, the Class 4 excels in fleet racing scenarios where tactical sailing and crew work determine success rather than equipment advantages. The boat's responsive handling characteristics make it particularly well-suited for close-quarters racing in protected waters, though its seaworthy design allows for more adventurous sailing when conditions permit. Racing enthusiasts appreciate the Class 4's honest sailing qualities and forgiving nature, which reward good technique while remaining manageable for developing sailors. The one-design format ensures that races are won through sailing skill rather than boat preparation, creating intense competition and fostering strong racing communities wherever active fleets exist. For sailors seeking an authentic racing experience without the complexity of modern high-performance boats, the Class 4 offers timeless appeal. Its straightforward systems and proven design make it an ideal choice for those who value traditional sailing fundamentals and spirited competition on the water.

Core Dimensions
LOA (Length Overall) 45.90 ft / 13.99 m
Beam 24.93 ft / 7.60 m
Max Draft 3.48 ft / 1.06 m
Displacement 16,755.13 lb / 7,600 kg
Sail Area (Reported) 1,130.21 ft² / 105.00 m²
Design & Construction
Hull Type Catamaran Twin Keel
Rigging Type Solent
Construction FG w/foam core & carbon beams
Designer Erik Lerouge
Builder O Yachts (Latvia)
First Built 2012
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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
27.72
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