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Sailboat Specifications

Formosa 41

Masthead Ketch · Long Keel

Designed by William Garden · Built by Formosa Boat Yard Ta Chiao · First built 1972

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LOA 40.92 ft  ·  Beam 12.17 ft  ·  Displacement 28,000.00 lb  ·  Sail Area 780.00 ft²  ·  Masthead Ketch  ·  Long Keel
About the Formosa 41 Sailboat

Designed by renowned naval architect William Garden and built by Taiwan's Ta Chiao yard starting in 1972, this masthead ketch represents classic blue-water cruising from the golden age of fiberglass sailboat construction. Garden's design philosophy emphasized seaworthiness over speed, creating a vessel that has earned respect among serious cruisers for its ocean-crossing capabilities. The long keel configuration provides exceptional directional stability and helps the boat track straight in heavy weather, though it sacrifices some maneuverability in tight quarters. With a substantial displacement of 28,000 pounds and generous ballast ratio, this design prioritizes safety and comfort over performance, reflected in its impressive comfort ratio of 44.75. The capsize screening formula of 1.61 indicates good stability characteristics suitable for offshore passage making. The ketch rig offers excellent sail handling options, allowing crews to reduce sail area incrementally in deteriorating conditions while maintaining balance. Garden's hull lines favor seakindliness over speed, with a conservative sail area to displacement ratio that ensures manageable sailing in various conditions. This design appeals to cruisers seeking a proven offshore platform rather than racing performance, with many examples having completed extensive voyages including circumnavigations.

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Taiwanese-built Formosa hulls of this era commonly used a wet lay-up process with inconsistent resin-to-glass ratios, resulting in areas of resin-rich laminate that are prone to delamination, particularly in the topsides and deck areas. Core samples or moisture meter readings across the entire deck surface are essential.
1972–1980 models
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Teak-planked decks over fiberglass substrate were common on this model. The teak is typically fastened with hundreds of small screws through the FG deck, and when the teak seams open or the wood shrinks, water intrudes through fastener holes leading to widespread deck core saturation and delamination of the underlying fiberglass.
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The chainplate attachment areas are known to allow water intrusion where chainplates pass through the deck. The original bedding compound deteriorates and is rarely resealed, leading to rot in the wooden backing blocks beneath the deck and potential compromise of shroud load transfer.
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Market Price Estimate Beta
Small sample size. This estimate is based on fewer than 5 listings and may not be representative of the true market. Use with caution.
$24,000 – $24,000
typical asking price
Median $24,000  ·  1 listing used
All listings
$24,000 – $24,000 1
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Dimensions & Specifications
LOA (Length Overall) 40.92 ft / 12.47 m
LWL (Waterline Length) 32.00 ft / 9.75 m
Beam 12.17 ft / 3.71 m
Max Draft 6.16 ft / 1.88 m
Displacement 28,000.00 lb / 12,701 kg
Ballast 9,200.00 lb / 4,173 kg
Ballast Type Iron
Sail Area (Reported) 780.00 ft² / 72.46 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Ketch
Construction FG
Designer William Garden
Builder Formosa Boat Yard Ta Chiao
First Built 1972
Owner Reviews

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Engine & Accommodations
Engine Make Perkins
Engine Type Diesel
Horsepower 45
Fuel Capacity 60 gals / 227 L
Water Capacity 120 gals / 454 L
Frequently Asked Questions

What is the Formosa 41's sail area to displacement ratio?

The Formosa 41 has a Sail Area to Displacement ratio (SA/D) of 13.59. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Formosa 41's comfort ratio?

The Formosa 41 has a Ted Brewer Comfort Ratio of 44.75. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Formosa 41 safe for offshore sailing?

The Formosa 41 has a Capsize Screening Formula value of 1.61. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Formosa 41?

The theoretical hull speed of the Formosa 41 is 7.58 kn knots, calculated from its waterline length.

How much does a Formosa 41 weigh?

The Formosa 41 has a displacement of 28,000.00 lb and a length overall (LOA) of 40.92 ft.

How much does a used Formosa 41 cost?

Based on 1 recent market listings, used Formosa 41 sailboats typically sell for between $24,000 and $24,000, with a median asking price of $24,000. Price varies significantly based on year, condition, location, and included equipment.

Who designed the Formosa 41?

The Formosa 41 was designed by William Garden, first built in 1972.