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Oyster Sj35
Designer: Stephen Jones  ·  Builder: Oyster Marine Ltd.  ·  First built: 1983
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About the Oyster Sj35

Designed by Stephen Jones and built by Oyster Marine Ltd. starting in 1983, this 35-footer represents an early entry in Oyster's renowned lineup of premium cruising yachts. The Sj35 carries the distinctive Oyster DNA of thoughtful construction and seaworthy design, though in a more compact package than the builder's larger ocean-going vessels. With a displacement of 8,600 pounds and substantial ballast of 3,700 pounds, the Sj35 offers impressive stability for coastal and offshore cruising. The fin keel with spade rudder configuration provides responsive handling, while the fractional sloop rig delivers versatility across varying wind conditions. Her 563 square feet of sail area creates a balanced sail plan that should perform well in both light airs and stronger winds. The moderate comfort ratio of 17.54 suggests this yacht strikes a nice balance between performance and onboard livability, making her suitable for extended cruising without sacrificing sailing characteristics. Her capsize screening value of 2.23 indicates good stability margins for offshore passages, while the 7-knot hull speed provides respectable passage-making capability. Built with fiberglass construction, the Sj35 benefits from Oyster's reputation for quality craftsmanship and attention to detail that has made the brand synonymous with premium cruising yachts.

Core Dimensions
LOA (Length Overall) 35.00 ft / 10.67 m
LWL (Waterline Length) 27.25 ft / 8.31 m
Beam 11.42 ft / 3.48 m
Max Draft 6.42 ft / 1.96 m
Displacement 8,600.00 lb / 3,901 kg
Ballast 3,700.00 lb / 1,678 kg
Sail Area (Reported) 563.00 ft² / 52.30 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Stephen Jones
Builder Oyster Marine Ltd.
First Built 1983
Related Sailboats ["Hunter 35 Legend" · "Dufour Classic 35" · "Oday 35" · "Santana 35" · "C&C 35"]
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
 21.53
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
 43.02
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
 189.74
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
 17.54
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
 2.23
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. 7.00 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
 3.35
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. 1,111.93 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. 21.55
Rig Dimensions
I (Foretriangle Height) 39.50 ft / 12.04 m
J (Foretriangle Base) 11.67 ft / 3.56 m
P (Mainsail Luff) 41.83 ft / 12.75 m
E (Mainsail Foot) 15.92 ft / 4.85 m
SA Fore 230.48 ft² / 21.41 m²
SA Main 332.97 ft² / 30.93 m²
SA Total (100%) 563.45 ft² / 52.35 m²
Est. Forestay Length 41.19 ft / 12.55 m
How It Compares

vs. Dufour Classic 35, Oday 35, Santana 35

This boat Similar boats
Dimensions
LOA
Oyster Sj35 ★
35.0 ft
Dufour Classic 35
35.0 ft
Oday 35
35.0 ft
Santana 35
35.0 ft
LWL
Oyster Sj35 ★
27.3 ft
Dufour Classic 35
28.0 ft
Oday 35
28.8 ft
Santana 35
26.5 ft
Beam
Oyster Sj35 ★
11.4 ft
Dufour Classic 35
11.5 ft
Oday 35
11.3 ft
Santana 35
11.9 ft
Displacement
Oyster Sj35 ★
8 lbs
Dufour Classic 35
10 lbs
Oday 35
11 lbs
Santana 35
8 lbs
Ballast
Oyster Sj35 ★
3 lbs
Dufour Classic 35
3 lbs
Oday 35
4 lbs
Santana 35
3 lbs
Sail Area
Oyster Sj35 ★
563 sq ft
Dufour Classic 35
492 sq ft
Oday 35
524 sq ft
Santana 35
550 sq ft
Performance
PHRF Rating (lower = faster)
Oyster Sj35 ★
—
Dufour Classic 35
—
Oday 35
149 s/nm
Santana 35
120 s/nm
SA / Displacement (higher = more powerful)
Oyster Sj35 ★
21.5
Dufour Classic 35
17.0
Oday 35
16.5
Santana 35
21.2
Ballast / Disp (higher = stiffer)
Oyster Sj35 ★
43.0 %
Dufour Classic 35
31.1 %
Oday 35
—
Santana 35
—
Comfort Ratio (higher = more comfortable offshore)
Oyster Sj35 ★
17.5
Dufour Classic 35
19.9
Oday 35
23.1
Santana 35
16.7
Capsize Screening (lower = safer)
Oyster Sj35 ★
2.23
Dufour Classic 35
2.14
Oday 35
2.00
Santana 35
2.34
Displacement / Length (lower = lighter)
Oyster Sj35 ★
189
Dufour Classic 35
203
Oday 35
—
Santana 35
—
Hull Speed
Oyster Sj35 ★
7.0 kts
Dufour Classic 35
7.1 kts
Oday 35
7.2 kts
Santana 35
6.9 kts
Speed Number (higher = faster)
Oyster Sj35 ★
3.4
Dufour Classic 35
2.7
Oday 35
2.5
Santana 35
3.1
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