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Sailboat Specifications

Berwick 31 Westerly

Masthead Sloop · Twin Keel

Designed by Laurent Giles · Built by Westerly Marine Ltd. (Uk) · First built 1973

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LOA 31.00 ft  ·  Beam 9.50 ft  ·  Displacement 9,790.00 lb  ·  Sail Area 424  ·  Masthead Sloop  ·  Twin Keel
About the Berwick 31 Westerly Sailboat

Built by British manufacturer Westerly, the Berwick 31 represents a classic approach to coastal cruising from an era when solid construction and seaworthy design were paramount. This moderate-sized sailboat embodies the traditional Westerly philosophy of creating robust, family-friendly vessels capable of handling diverse sailing conditions with confidence. While detailed specifications remain limited, the Berwick 31's pedigree suggests a well-balanced design suitable for weekend coastal adventures and extended cruising alike. Westerly's reputation for building boats with generous beam and stable sailing characteristics likely carries through to this model, making it an appealing choice for sailors seeking reliability over racing performance. The design appears to prioritize comfort and safety, typical of Westerly's approach during their prolific boat-building years. This makes the Berwick 31 particularly well-suited for families or couples looking for a trustworthy platform for exploring coastal waters and protected offshore passages. Given Westerly's track record, owners can expect solid construction quality and thoughtful interior layouts that maximize livability within the available space. For sailors valuing proven design principles and traditional sailing characteristics, the Berwick 31 offers an intriguing option in the competitive 31-foot cruising market.

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Dimensions & Specifications
LOA (Length Overall) 31.00 ft / 9.45 m
LWL (Waterline Length) 25.00 ft / 7.62 m
Beam 9.50 ft / 2.90 m
Max Draft 3.58 ft / 1.09 m
Displacement 9,790.00 lb / 4,441 kg
Ballast 4,436.00 lb / 2,012 kg
Sail Area (Reported) 424
Design & Construction
Hull Type Twin Keel
Rigging Type Masthead Sloop
Construction FG
Designer Laurent Giles
Builder Westerly Marine Ltd. (UK)
First Built 1973
Last Built 1980
Number Built 309
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Engine & Accommodations
Horsepower 23
Fuel Capacity 20 gals / 76 L
Water Capacity 30 gals / 114 L
Frequently Asked Questions

What is the Berwick 31 Westerly's sail area to displacement ratio?

The Berwick 31 Westerly has a Sail Area to Displacement ratio (SA/D) of 14.87. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Berwick 31 Westerly's comfort ratio?

The Berwick 31 Westerly has a Ted Brewer Comfort Ratio of 28.14. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Berwick 31 Westerly safe for offshore sailing?

The Berwick 31 Westerly has a Capsize Screening Formula value of 1.78. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Berwick 31 Westerly?

The theoretical hull speed of the Berwick 31 Westerly is 6.7 knots, calculated from its waterline length.

How much does a Berwick 31 Westerly weigh?

The Berwick 31 Westerly has a displacement of 9,790.00 lb and a length overall (LOA) of 31.00 ft.

Who designed the Berwick 31 Westerly?

The Berwick 31 Westerly was designed by Laurent Giles, first built in 1973.