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Larsen 28
Designer: Hans Åge Larsen  ·  Builder: Nyboat (Den)  ·  First built: 1984
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About the Larsen 28

Danish designer Hans Åge larsen created this well-balanced 29-footer in 1984, with Nyboat producing 113 hulls over the boat's production run. The Larsen 28 represents solid Scandinavian design philosophy, emphasizing seaworthiness and practical sailing performance over flashy accommodations. Built with fiberglass construction and featuring a fin keel with spade rudder configuration, this fractional sloop delivers respectable sailing characteristics for coastal cruising and club racing. The boat's moderate displacement of 5,732 pounds, combined with 2,469 pounds of ballast, creates a stable platform that inspires confidence in varied conditions. Her sail-area-to-displacement ratio of 19.14 provides adequate power for spirited sailing without being overly aggressive. The Larsen 28's comfort ratio of 17.91 indicates a motion that favors performance over ultimate stability, making her well-suited for day sailing and weekend coastal adventures rather than extended offshore passages. Her capsize screening formula of 1.95 falls within acceptable limits for near-shore cruising. With a theoretical hull speed of 6.96 knots and 382 square feet of sail area, she offers engaging sailing performance while maintaining the practical characteristics that Danish designs are known for. The modest 12-horsepower auxiliary provides reliable backup power for harbor maneuvering.

Core Dimensions
LOA (Length Overall) 29.13 ft / 8.88 m
LWL (Waterline Length) 26.94 ft / 8.21 m
Beam 8.73 ft / 2.66 m
Max Draft 4.76 ft / 1.45 m
Displacement 5,732.00 lb / 2,600 kg
Ballast 2,469.00 lb / 1,120 kg
Ballast Type Lead
Sail Area (Reported) 382.00 ft² / 35.49 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Hans Åge Larsen
Builder Nyboat (DEN)
First Built 1984
Number Built 113
Associations Larsen Club (DEN)
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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
 19.14
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 43.07
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
 130.88
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
 17.91
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
 1.95
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. 6.96 kn
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
 3.99
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. 840.35 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 19.14
Rig Dimensions
I (Foretriangle Height) 31.17 ft / 9.50 m
J (Foretriangle Base) 11.09 ft / 3.38 m
P (Mainsail Luff) 34.45 ft / 10.50 m
E (Mainsail Foot) 12.14 ft / 3.70 m
SA Fore 172.84 ft² / 16.06 m²
SA Main 209.11 ft² / 19.43 m²
SA Total (100%) 381.95 ft² / 35.48 m²
Est. Forestay Length 33.08 ft / 10.08 m
Engine & Accommodations
Engine Make Volvo Penta
Engine Type Diesel
Horsepower 12
Fuel Capacity 8 gals / 30 L
Water Capacity 7 gals / 26 L
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