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Muscadet
Designer: Harlé  ·  Builder: Chantier Aubin / Sartini /Kits  ·  First built: 1963
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About the Muscadet

Designed by Philippe Harlé in 1963, this compact French sailboat carved out a distinctive niche in the European small boat market during its 14-year production run. Built primarily by Chantier Aubin and Sartini, along with kit versions, 583 Muscadets found their way to sailors seeking an affordable yet capable coastal cruiser. The boat's hard-chine plywood construction reflects the practical boatbuilding philosophy of the 1960s, offering durability and ease of maintenance while keeping costs reasonable. Her masthead sloop rig and generous sail area to displacement ratio of 17.19 suggest spirited performance, while the substantial ballast ratio provides reassuring stability for coastal adventures. At just over 21 feet, the Muscadet represents classic pocket cruiser proportions, with enough accommodation for weekend getaways while remaining trailerable. The combination keel and centerboard configuration offers versatility, allowing access to shallow waters while maintaining good windward performance when the board is down. With a comfort ratio of 14.75, this design leans toward the sportier side of the spectrum, making it well-suited for active coastal sailing rather than extended offshore passages. The reasonable capsize screening formula of 2.15 indicates adequate stability for her intended role as a spirited day sailer and weekend cruiser.

Core Dimensions
LOA (Length Overall) 21.26 ft / 6.48 m
LWL (Waterline Length) 18.37 ft / 5.60 m
Beam 7.41 ft / 2.26 m
Max Draft 4.10 ft / 1.25 m
Min Draft 2.46 ft / 0.75 m
Displacement 2,646.00 lb / 1,200 kg
Ballast 1,146.00 lb / 520 kg
Sail Area (Reported) 205.00 ft² / 19.05 m²
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Masthead Sloop
Construction Plywood (hard chine)
Designer Harlé
Builder Chantier Aubin / Sartini /kits
First Built 1963
Last Built 1977
Number Built 583
Associations Muscadet Association (FRA)
Related Sailboats Golif Jouet · Sylphe Dufour · Elvstrom 65 · Trotter · Cap Horn
Owner Reviews

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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
17.19
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
43.31
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
190.55
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
14.75
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
2.15
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. 5.74 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
2.84
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. 486.38 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. 17.15
Rig Dimensions
I (Foretriangle Height) 26.25 ft / 8.00 m
J (Foretriangle Base) 8.00 ft / 2.44 m
P (Mainsail Luff) 22.47 ft / 6.85 m
E (Mainsail Foot) 8.86 ft / 2.70 m
SA Fore 105.00 ft² / 9.75 m²
SA Main 99.54 ft² / 9.25 m²
SA Total (100%) 204.54 ft² / 19.00 m²
Est. Forestay Length 27.44 ft / 8.36 m
How It Compares

vs. Cap Horn, Elvstrom 65, Golif Jouet, Sylphe Dufour, Trotter

This boat Similar boats
Dimensions
LOA
Muscadet ★
21.3 ft
Cap Horn
21.3 ft
Elvstrom 65
21.3 ft
Golif Jouet
21.3 ft
Sylphe Dufour
21.4 ft
Trotter
21.3 ft
LWL
Muscadet ★
18.4 ft
Cap Horn
19.7 ft
Elvstrom 65
17.9 ft
Golif Jouet
19.4 ft
Sylphe Dufour
19.3 ft
Trotter
18.5 ft
Beam
Muscadet ★
7.4 ft
Cap Horn
7.1 ft
Elvstrom 65
7.7 ft
Golif Jouet
7.4 ft
Sylphe Dufour
7.9 ft
Trotter
6.9 ft
Displacement
Muscadet ★
2 lbs
Cap Horn
2 lbs
Elvstrom 65
2 lbs
Golif Jouet
2 lbs
Sylphe Dufour
3 lbs
Trotter
2 lbs
Ballast
Muscadet ★
1 lbs
Cap Horn
880 lbs
Elvstrom 65
1 lbs
Golif Jouet
1 lbs
Sylphe Dufour
882 lbs
Trotter
Sail Area
Muscadet ★
205 sq ft
Cap Horn
240 sq ft
Elvstrom 65
215 sq ft
Golif Jouet
232 sq ft
Sylphe Dufour
222 sq ft
Trotter
Performance
SA / Displacement (higher = more powerful)
Muscadet ★
17.2
Cap Horn
24.3
Elvstrom 65
18.7
Golif Jouet
18.4
Sylphe Dufour
16.4
Trotter
Ballast / Disp (higher = stiffer)
Muscadet ★
43.3 %
Cap Horn
44.0 %
Elvstrom 65
Golif Jouet
Sylphe Dufour
Trotter
Comfort Ratio (higher = more comfortable offshore)
Muscadet ★
14.8
Cap Horn
11.3
Elvstrom 65
13.5
Golif Jouet
15.4
Sylphe Dufour
15.7
Trotter
Capsize Screening (lower = safer)
Muscadet ★
2.15
Cap Horn
2.25
Elvstrom 65
2.27
Golif Jouet
2.09
Sylphe Dufour
2.15
Trotter
Displacement / Length (lower = lighter)
Muscadet ★
190
Cap Horn
117
Elvstrom 65
Golif Jouet
Sylphe Dufour
Trotter
175
Hull Speed
Muscadet ★
5.7 kts
Cap Horn
5.9 kts
Elvstrom 65
5.7 kts
Golif Jouet
5.9 kts
Sylphe Dufour
5.9 kts
Trotter
Speed Number (higher = faster)
Muscadet ★
2.8
Cap Horn
Elvstrom 65
2.9
Golif Jouet
3.2
Sylphe Dufour
Trotter
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