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Sailboat Specifications

Vulcan 34 Westerly

Masthead Sloop · Twin Keel

Designed by Jack Laurent Giles · Built by Westerly Marine Ltd. (Uk) · First built 1980

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LOA 34.00 ft  ·  Beam 11.75 ft  ·  Displacement 15,602.00 lb  ·  Sail Area 570.00 ft²  ·  Masthead Sloop  ·  Twin Keel
About the Vulcan 34 Westerly Sailboat

Designed by the renowned Jack Laurent Giles and built by Westerly Marine from 1980 to 1984, this distinctive twin-keeled cruiser represents British yacht building at its most practical. With only 42 hulls produced during its four-year run, the Vulcan 34 has become a sought-after example of thoughtful coastal cruising design. The twin-keel configuration stands as this yacht's defining characteristic, allowing access to shallow harbors and the ability to dry out safely on beaches or in tidal waters. This feature makes her particularly well-suited for exploring the challenging tidal ranges and shallow anchorages common around British and European coasts. The substantial 6,971-pound ballast provides excellent stability despite the unconventional keel arrangement. With a comfort ratio of 30.1 and capsize screening formula of 1.88, she strikes an ideal balance between seaworthiness and livability for extended coastal cruising. The masthead sloop rig with 570 square feet of sail area delivers respectable performance while remaining manageable for couples or small crews. Her fiberglass construction ensures durability, while the generous 11.75-foot beam maximizes interior volume. This yacht excels as a comfortable coastal cruiser for those who value the flexibility of twin keels over ultimate sailing performance.

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Dimensions & Specifications
LOA (Length Overall) 34.00 ft / 10.36 m
LWL (Waterline Length) 28.42 ft / 8.66 m
Beam 11.75 ft / 3.58 m
Max Draft 4.25 ft / 1.30 m
Displacement 15,602.00 lb / 7,077 kg
Ballast 6,971.00 lb / 3,162 kg
Ballast Type Iron
Sail Area (Reported) 570.00 ft² / 52.95 m²
Design & Construction
Hull Type Twin Keel
Rigging Type Masthead Sloop
Construction FG
Designer Jack Laurent Giles
Builder Westerly Marine Ltd. (UK)
First Built 1980
Last Built 1984
Number Built 42
Associations Westerly Owners Association
Related Sailboats Gk 34 Westerly · Rival 34 · Contest 34 · Oday 34 · Catalina 34
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Engine & Accommodations
Engine Make Volvo
Engine Type Diesel
Horsepower 60
Fuel Capacity 60 gals / 227 L
Water Capacity 100 gals / 379 L
Frequently Asked Questions

What is the Vulcan 34 Westerly's sail area to displacement ratio?

The Vulcan 34 Westerly has a Sail Area to Displacement ratio (SA/D) of 14.66. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Vulcan 34 Westerly's comfort ratio?

The Vulcan 34 Westerly has a Ted Brewer Comfort Ratio of 30.1. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Vulcan 34 Westerly safe for offshore sailing?

The Vulcan 34 Westerly has a Capsize Screening Formula value of 1.88. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Vulcan 34 Westerly?

The theoretical hull speed of the Vulcan 34 Westerly is 7.14 kn knots, calculated from its waterline length.

How much does a Vulcan 34 Westerly weigh?

The Vulcan 34 Westerly has a displacement of 15,602.00 lb and a length overall (LOA) of 34.00 ft.

Who designed the Vulcan 34 Westerly?

The Vulcan 34 Westerly was designed by Jack Laurent Giles, first built in 1980.