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Aura A35
Designer: Sparkman & Stephens  ·  Builder: Aura Yachts, Inc. (Usa)  ·  First built: 1975
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About the Aura A35

Designed by the legendary Sparkman & Stephens naval architecture firm, this 35-footer represents classic American yacht design from the mid-1970s. Built by Aura Yachts starting in 1975, the A35 showcases the timeless proportions and seaworthy characteristics that made S&S designs renowned worldwide. With her moderate displacement of 12,000 pounds and substantial ballast ratio, this masthead sloop delivers the stability and comfort that coastal cruisers demand. The fin keel with rudder on skeg configuration provides responsive handling while maintaining directional stability in following seas. Her 26-foot waterline generates a respectable hull speed of 6.83 knots, making her well-suited for extended coastal passages and weekend cruising. The fiberglass construction ensures durability, while the generous 11-foot beam provides ample interior volume for comfortable accommodations. Her comfort ratio of 26.37 indicates a boat that moves through waves rather than riding over them, characteristic of designs prioritizing seaworthiness over pure speed. The capsize screening value of 1.93 reflects good offshore capability, though she's ideally suited for coastal and near-shore cruising where her classic lines and reliable performance truly shine.

Core Dimensions
LOA (Length Overall) 35.50 ft / 10.82 m
LWL (Waterline Length) 26.00 ft / 7.92 m
Beam 11.00 ft / 3.35 m
Max Draft 5.83 ft / 1.78 m
Displacement 12,000.00 lb / 5,443 kg
Ballast 5,400.00 lb / 2,449 kg
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Sparkman & Stephens
Builder Aura Yachts, Inc. (USA)
First Built 1975
Related Sailboats Hughes 35 · Sceptre 36 · Bristol 355 · Cc 36 1 · Swan 36
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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
45
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
304.8
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
26.37
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
1.93
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. 6.83 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
1.59
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. 1,021.91 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. 15.42
Rig Dimensions
I (Foretriangle Height) 42.60 ft / 12.98 m
J (Foretriangle Base) 14.50 ft / 4.42 m
P (Mainsail Luff) 37.80 ft / 11.52 m
E (Mainsail Foot) 10.30 ft / 3.14 m
SA Fore 308.85 ft² / 28.69 m²
SA Main 194.67 ft² / 18.09 m²
SA Total (100%) 503.52 ft² / 46.78 m²
Est. Forestay Length 45.00 ft / 13.72 m
Engine & Accommodations
Engine Make Univeral
How It Compares

vs. Bristol 355, Cc 36 1, Hughes 35, Sceptre 36, Swan 36

This boat Similar boats
Dimensions
LOA
Aura A35 ★
35.5 ft
Bristol 355
35.5 ft
Cc 36 1
35.7 ft
Hughes 35
35.5 ft
Sceptre 36
35.5 ft
Swan 36
35.7 ft
LWL
Aura A35 ★
26.0 ft
Bristol 355
27.5 ft
Cc 36 1
27.8 ft
Hughes 35
26.0 ft
Sceptre 36
29.1 ft
Swan 36
25.9 ft
Beam
Aura A35 ★
11.0 ft
Bristol 355
10.8 ft
Cc 36 1
11.5 ft
Hughes 35
10.3 ft
Sceptre 36
11.4 ft
Swan 36
9.7 ft
Displacement
Aura A35 ★
12 lbs
Bristol 355
15 lbs
Cc 36 1
12 lbs
Hughes 35
12 lbs
Sceptre 36
12 lbs
Swan 36
14 lbs
Ballast
Aura A35 ★
5 lbs
Bristol 355
6 lbs
Cc 36 1
5 lbs
Hughes 35
5 lbs
Sceptre 36
5 lbs
Swan 36
7 lbs
Sail Area
Aura A35 ★
Bristol 355
602 sq ft
Cc 36 1
599 sq ft
Hughes 35
504 sq ft
Sceptre 36
Swan 36
546 sq ft
Performance
PHRF Rating (lower = faster)
Aura A35 ★
Bristol 355
Cc 36 1
Hughes 35
149 s/nm
Sceptre 36
135 s/nm
Swan 36
144 s/nm
SA / Displacement (higher = more powerful)
Aura A35 ★
Bristol 355
15.9
Cc 36 1
18.4
Hughes 35
15.4
Sceptre 36
Swan 36
14.9
Ballast / Disp (higher = stiffer)
Aura A35 ★
45.0 %
Bristol 355
Cc 36 1
41.7 %
Hughes 35
45.0 %
Sceptre 36
45.8 %
Swan 36
55.5 %
Comfort Ratio (higher = more comfortable offshore)
Aura A35 ★
26.4
Bristol 355
32.5
Cc 36 1
23.8
Hughes 35
28.7
Sceptre 36
Swan 36
37.2
Capsize Screening (lower = safer)
Aura A35 ★
1.93
Bristol 355
1.76
Cc 36 1
2.01
Hughes 35
1.81
Sceptre 36
Swan 36
1.60
Displacement / Length (lower = lighter)
Aura A35 ★
304
Bristol 355
Cc 36 1
250
Hughes 35
304
Sceptre 36
217
Swan 36
366
Hull Speed
Aura A35 ★
6.8 kts
Bristol 355
7.0 kts
Cc 36 1
7.1 kts
Hughes 35
6.8 kts
Sceptre 36
Swan 36
6.8 kts
Speed Number (higher = faster)
Aura A35 ★
1.6
Bristol 355
1.5
Cc 36 1
2.3
Hughes 35
1.6
Sceptre 36
Swan 36
1.2
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