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Spirit 30 Mcmillan
Designer: Sean Mcmillan  ·  Builder: Spirit Yachts (Uk)  ·  First built: 2021
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About the Spirit 30 Mcmillan

Spirit Yachts' collaboration with designer Sean Mcmillan has produced a sophisticated 30-footer that exemplifies modern wooden boat construction with classic proportions. This fractional sloop represents Spirit Yachts' commitment to traditional craftsmanship while incorporating contemporary design principles for enhanced performance and comfort. The Spirit 30's fin keel and spade rudder configuration, combined with a displacement of 3,747 pounds and 40% ballast ratio, creates a well-balanced platform suitable for both spirited coastal sailing and comfortable weekend cruising. The 21-foot waterline length generates a theoretical hull speed of 6.19 knots, while the moderate beam of 6.56 feet provides good initial stability without sacrificing speed potential. With a comfort ratio of 19.74, this yacht strikes an appealing balance between performance and livability, making it ideal for sailors who appreciate responsive handling without excessive motion in seaways. The low capsize screening value of 1.69 indicates good stability characteristics appropriate for coastal and near-offshore sailing. Spirit Yachts' renowned wooden construction methods ensure exceptional build quality and longevity, while the modest 8-horsepower auxiliary provides reliable propulsion for harbor maneuvering and calm conditions.

Core Dimensions
LOA (Length Overall) 30.02 ft / 9.15 m
LWL (Waterline Length) 21.33 ft / 6.50 m
Beam 6.56 ft / 2.00 m
Max Draft 4.43 ft / 1.35 m
Displacement 3,747.86 lb / 1,700 kg
Ballast 1,499.14 lb / 680 kg
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction Wood
Designer Sean McMillan
Builder Spirit Yachts (UK)
First Built 2021
Related Sailboats ["Cc 30 Od" · "J/30" · "Moore 30" · "Cs 30" · "Contest 30"]
Owner Reviews

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Performance Ratios
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
40
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
172.41
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
19.74
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
1.69
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. 6.19 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. 499.97 pounds/inch
Engine & Accommodations
Engine Make Torqeedo
Engine Model Cruise 4.0 FP
Engine Type Electric
Horsepower 8
How It Compares

vs. Cs 30, J/30, Moore 30

This boat Similar boats
Dimensions
LOA
Spirit 30 Mcmillan ★
30.0 ft
Cs 30
30.0 ft
J/30
30.0 ft
Moore 30
30.0 ft
LWL
Spirit 30 Mcmillan ★
21.3 ft
Cs 30
25.4 ft
J/30
25.0 ft
Moore 30
26.3 ft
Beam
Spirit 30 Mcmillan ★
6.6 ft
Cs 30
10.3 ft
J/30
10.8 ft
Moore 30
14.0 ft
Displacement
Spirit 30 Mcmillan ★
3 lbs
Cs 30
8 lbs
J/30
6 lbs
Moore 30
2 lbs
Ballast
Spirit 30 Mcmillan ★
1 lbs
Cs 30
3 lbs
J/30
2 lbs
Moore 30
800 lbs
Sail Area
Spirit 30 Mcmillan ★
Cs 30
462 sq ft
J/30
436 sq ft
Moore 30
466 sq ft
Performance
PHRF Rating (lower = faster)
Spirit 30 Mcmillan ★
Cs 30
150 s/nm
J/30
144 s/nm
Moore 30
51 s/nm
SA / Displacement (higher = more powerful)
Spirit 30 Mcmillan ★
Cs 30
18.5
J/30
20.8
Moore 30
47.1
Ballast / Disp (higher = stiffer)
Spirit 30 Mcmillan ★
40.0 %
Cs 30
J/30
39.3 %
Moore 30
40.0 %
Comfort Ratio (higher = more comfortable offshore)
Spirit 30 Mcmillan ★
19.7
Cs 30
20.8
J/30
23.6
Moore 30
3.4
Capsize Screening (lower = safer)
Spirit 30 Mcmillan ★
1.69
Cs 30
2.05
J/30
1.73
Moore 30
4.45
Displacement / Length (lower = lighter)
Spirit 30 Mcmillan ★
172
Cs 30
J/30
109
Moore 30
49
Hull Speed
Spirit 30 Mcmillan ★
6.2 kts
Cs 30
6.8 kts
J/30
7.6 kts
Moore 30
6.9 kts
Speed Number (higher = faster)
Spirit 30 Mcmillan ★
Cs 30
2.7
J/30
Moore 30
10.2
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