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Riviera 35 Westerly
Designer: Ed Dubois  ·  Builder: Westerly Marine Ltd. (Uk)  ·  First built: 1988
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About the Riviera 35 Westerly

Designed by renowned naval architect Ed Dubois and built by Westerly Marine between 1988 and 1992, this 35-footer represents a compelling blend of performance and cruising capability. With only 70 hulls produced during its four-year run, the Riviera 35 has become a sought-after example of late 1980s British yacht design excellence. The boat's fin keel with rudder on skeg configuration, combined with a masthead sloop rig carrying 580 square feet of sail area, delivers spirited sailing performance while maintaining good directional stability. Her SA/Displacement ratio of 15.17 indicates moderate performance potential, making her suitable for both coastal cruising and club racing. The comfortable 28.21 comfort ratio suggests she's well-suited for extended passages and offshore work. At 34.58 feet overall with a waterline length of 27.50 feet, she offers generous interior volume within her 12.25-foot beam. The substantial displacement of 15,212 pounds, with 5,291 pounds of ballast, provides excellent stability and seaworthiness. Her theoretical hull speed of 7.03 knots and favorable capsize screening ratio of 1.98 make her a confident choice for serious coastal and offshore cruising, backed by Westerly's reputation for solid fiberglass construction.

Core Dimensions
LOA (Length Overall) 34.58 ft / 10.54 m
LWL (Waterline Length) 27.50 ft / 8.38 m
Beam 12.25 ft / 3.73 m
Max Draft 4.67 ft / 1.42 m
Displacement 15,212.00 lb / 6,900 kg
Ballast 5,291.00 lb / 2,400 kg
Sail Area (Reported) 580.00 ft² / 53.88 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Ed Dubois
Builder Westerly Marine Ltd. (UK)
First Built 1988
Last Built 1992
Number Built 70
Associations Westerly Owners Association
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
15.17
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
34.78
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
326.54
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
28.21
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
1.98
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. 7.03 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. 1,203.69 pounds/inch
Rig Dimensions
Mast Height (DWL) 48.92 ft / 14.91 m
Engine & Accommodations
Engine Make Volvo
Engine Type Diesel
Horsepower 28
Fuel Capacity 55 gals / 208 L
Water Capacity 95 gals / 360 L
How It Compares

vs. Cheoy Lee 35, Heritage 35, Karate Sport, Kestrel 35 Westerly, Panda 34

This boat Similar boats
Dimensions
LOA
Riviera 35 Westerly ★
34.6 ft
Cheoy Lee 35
34.8 ft
Heritage 35
35.1 ft
Karate Sport
32.6 ft
Kestrel 35 Westerly
34.6 ft
Panda 34
33.9 ft
LWL
Riviera 35 Westerly ★
27.5 ft
Cheoy Lee 35
27.1 ft
Heritage 35
26.6 ft
Karate Sport
24.0 ft
Kestrel 35 Westerly
27.0 ft
Panda 34
28.4 ft
Beam
Riviera 35 Westerly ★
12.3 ft
Cheoy Lee 35
11.2 ft
Heritage 35
10.2 ft
Karate Sport
9.7 ft
Kestrel 35 Westerly
12.3 ft
Panda 34
11.0 ft
Displacement
Riviera 35 Westerly ★
15 lbs
Cheoy Lee 35
14 lbs
Heritage 35
13 lbs
Karate Sport
9 lbs
Kestrel 35 Westerly
14 lbs
Panda 34
16 lbs
Ballast
Riviera 35 Westerly ★
5 lbs
Cheoy Lee 35
5 lbs
Heritage 35
6 lbs
Karate Sport
3 lbs
Kestrel 35 Westerly
5 lbs
Panda 34
5 lbs
Sail Area
Riviera 35 Westerly ★
580 sq ft
Cheoy Lee 35
565 sq ft
Heritage 35
Karate Sport
Kestrel 35 Westerly
560 sq ft
Panda 34
630 sq ft
Performance
PHRF Rating (lower = faster)
Riviera 35 Westerly ★
Cheoy Lee 35
183 s/nm
Heritage 35
162 s/nm
Karate Sport
Kestrel 35 Westerly
Panda 34
SA / Displacement (higher = more powerful)
Riviera 35 Westerly ★
15.2
Cheoy Lee 35
15.4
Heritage 35
Karate Sport
Kestrel 35 Westerly
15.4
Panda 34
15.4
Ballast / Disp (higher = stiffer)
Riviera 35 Westerly ★
34.8 %
Cheoy Lee 35
36.4 %
Heritage 35
45.6 %
Karate Sport
37.8 %
Kestrel 35 Westerly
40.5 %
Panda 34
34.3 %
Comfort Ratio (higher = more comfortable offshore)
Riviera 35 Westerly ★
28.2
Cheoy Lee 35
30.2
Heritage 35
Karate Sport
28.1
Kestrel 35 Westerly
26.5
Panda 34
35.6
Capsize Screening (lower = safer)
Riviera 35 Westerly ★
1.98
Cheoy Lee 35
1.84
Heritage 35
Karate Sport
1.81
Kestrel 35 Westerly
2.03
Panda 34
1.72
Displacement / Length (lower = lighter)
Riviera 35 Westerly ★
326
Cheoy Lee 35
321
Heritage 35
324
Karate Sport
322
Kestrel 35 Westerly
320
Panda 34
328
Hull Speed
Riviera 35 Westerly ★
7.0 kts
Cheoy Lee 35
7.0 kts
Heritage 35
Karate Sport
6.6 kts
Kestrel 35 Westerly
7.0 kts
Panda 34
7.1 kts
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