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Wright 40 Allied
Designer: Arthur Edmunds/Sparkman & Stephens  ·  Builder: Wright Yacht Co./Allied Boat Co.  ·  First built: 1977
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About the Wright 40 Allied

Produced by Allied Boat Works, the Wright 40 Allied is a mid-century American sailboat that reflects the craftsmanship and design sensibilities of an era when offshore capable cruisers were built with longevity in mind. Allied Boat Works earned a solid reputation during the 1960s and 1970s for producing sturdy, sea-kindly vessels, and boats from this builder continue to attract sailors who appreciate traditional construction and proven offshore performance. While detailed specifications for this particular model are limited, the Wright 40 fits within a class of capable bluewater cruisers well suited to coastal passages and open ocean sailing alike. Boats of this size and lineage typically offer comfortable accommodations for extended voyaging, with hull designs prioritizing stability and seakeeping over pure speed. Sailors drawn to classic American fiberglass construction and the heritage of established yards will find this an intriguing prospect. For anyone seriously considering a Wright 40 Allied, a thorough survey is strongly recommended, as with any vintage vessel. Enthusiast communities and Allied owners' groups can be valuable resources for uncovering model-specific insights and maintenance history.

Core Dimensions
LOA (Length Overall) 40.25 ft / 12.27 m
LWL (Waterline Length) 29.78 ft / 9.08 m
Beam 12.00 ft / 3.66 m
Max Draft 8.17 ft / 2.49 m
Min Draft 4.00 ft / 1.22 m
Displacement 19,000.00 lb / 8,618 kg
Ballast 6,100.00 lb / 2,767 kg
Sail Area (Reported) 670.00 ft² / 62.25 m²
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Masthead Ketch
Construction FG
Designer Arthur Edmunds/Sparkman & Stephens
Builder Wright Yacht Co./Allied Boat Co.
First Built 1977
Last Built 1978
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
 15.11
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
 32.59
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
 1.8
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. 7.31
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
 1.46
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. 1.0
Rig Dimensions
I (Foretriangle Height) 44.0
J (Foretriangle Base) 17.8
P (Mainsail Luff) 39.0
E (Mainsail Foot) 14.3
SA Fore 391.6
SA Main 278.85
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