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Rapido 40
Designer: Morrelli & Melvin  ·  Builder: Rapido Trimarans (Hong Kong)  ·  First built: 2020
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About the Rapido 40

Launched in 2020, this striking trimaran represents Rapido Trimarans' entry into the performance cruising market with design expertise from renowned naval architects Morrelli & Melvin. Built in Hong Kong using advanced infused carbon foam sandwich construction, the Rapido 40 delivers an impressive combination of speed, comfort, and seaworthiness that appeals to sailors seeking multihull performance without sacrificing cruising amenities. The boat's fractional sloop rig features a rotating carbon spar that optimizes sail shape and efficiency across varying wind conditions. With a generous sail area-to-displacement ratio of 48.05, this trimaran offers exhilarating sailing performance while maintaining the stability that makes multihulls attractive to cruising sailors. The nearly 29-foot beam provides exceptional interior volume and deck space, creating comfortable living areas that rival much larger monohulls. Designed for both coastal cruising and offshore passages, the Rapido 40 attracts sailors who prioritize speed and efficiency over traditional cruising boat layouts. The relatively shallow 7.15-foot draft opens access to shoal waters and smaller harbors, while the advanced carbon construction keeps displacement remarkably low for enhanced performance. This trimaran suits experienced sailors comfortable with multihull handling characteristics who desire a fast, modern cruising platform.

Core Dimensions
LOA (Length Overall) 39.47 ft / 12.03 m
LWL (Waterline Length) 39.37 ft / 12.00 m
Beam 28.87 ft / 8.80 m
Max Draft 7.15 ft / 2.18 m
Min Draft 2.85 ft / 0.87 m
Displacement 10,461.00 lb / 4,745 kg
Sail Area (Reported) 1,431.60 ft² / 133.00 m²
Design & Construction
Hull Type Trimaran Dbrd.
Rigging Type Frac. Sloop (Rotating Spar)
Construction Infused carbon foam sandwich
Designer Morrelli & Melvin
Builder Rapido Trimarans (Hong Kong)
First Built 2020
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Performance Ratios
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
4.62
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
5.29
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. 8.41 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
7.78
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. 24.36 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. 36.71
Rig Dimensions
I (Foretriangle Height) 55.84 ft / 17.02 m
J (Foretriangle Base) 21.42 ft / 6.53 m
P (Mainsail Luff) 52.92 ft / 16.13 m
E (Mainsail Foot) 18.73 ft / 5.71 m
SA Fore 598.05 ft² / 55.56 m²
SA Main 495.60 ft² / 46.04 m²
SA Total (100%) 1,093.65 ft² / 101.60 m²
Est. Forestay Length 59.81 ft / 18.23 m
Mast Height (DWL) 63.16 ft / 19.25 m
Engine & Accommodations
Engine Make Yanmar
Engine Model 3YM30AE
Engine Type Diesel
Horsepower 29
Fuel Capacity 53 gals / 200 L
Water Capacity 53 gals / 200 L
KSP 1.16
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