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Sailboat Specifications

Gulfstar 40 Sailmaster

Masthead Sloop · Fin With Rudder On Skeg

Designed by Lazarra · Built by Gulfstar Yachts (Usa) · First built 1980

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LOA 39.92 ft  ·  Beam 12.08 ft  ·  Displacement 20,000.00 lb  ·  Sail Area 705.00 ft²  ·  Masthead Sloop  ·  Fin With Rudder On Skeg
About the Gulfstar 40 Sailmaster Sailboat

Designed by Lazarra and built by Gulfstar Yachts in the United States starting in 1980, this masthead sloop represents a comfortable cruising yacht from an era when American builders were establishing their reputation for quality fiberglass construction. With only ten hulls produced, the Sailmaster 40 remains a relatively rare find in today's used boat market. The yacht's substantial 20,000-pound displacement and generous 8,500 pounds of ballast create a stable, seaworthy platform well-suited for coastal and offshore cruising. Her fin keel with rudder-on-skeg configuration offers a good balance of performance and directional stability, while the 12.08-foot beam provides ample interior volume for extended cruising comfort. With a comfort ratio of 32.23, this boat prioritizes seaworthiness and motion comfort over racing performance, making her an excellent choice for couples or small families planning longer passages. The capsize screening formula of 1.78 indicates good stability characteristics for offshore work. Her 705 square feet of sail area and SA/Displacement ratio of 15.37 suggest moderate performance in light to medium conditions, while the hull's 7.64-knot theoretical hull speed provides respectable passage-making capability. The standard 50-horsepower engine offers reliable auxiliary power for maneuvering in tight quarters or powering through calms.

Dimensions & Specifications
LOA (Length Overall) 39.92 ft / 12.17 m
LWL (Waterline Length) 32.50 ft / 9.91 m
Beam 12.08 ft / 3.68 m
Min Draft 4.75 ft / 1.45 m
Displacement 20,000.00 lb / 9,072 kg
Ballast 8,500.00 lb / 3,856 kg
Sail Area (Reported) 705.00 ft² / 65.50 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Lazarra
Builder Gulfstar Yachts (USA)
First Built 1980
Number Built 10
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Engine & Accommodations
Engine Make Perkins
Engine Model 4-108
Engine Type Diesel
Horsepower 50
Fuel Capacity 60 gals / 227 L
Water Capacity 250 gals / 946 L
Frequently Asked Questions

What is the Gulfstar 40 Sailmaster's sail area to displacement ratio?

The Gulfstar 40 Sailmaster has a Sail Area to Displacement ratio (SA/D) of 15.37. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Gulfstar 40 Sailmaster's comfort ratio?

The Gulfstar 40 Sailmaster has a Ted Brewer Comfort Ratio of 32.23. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Gulfstar 40 Sailmaster safe for offshore sailing?

The Gulfstar 40 Sailmaster 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 Gulfstar 40 Sailmaster?

The theoretical hull speed of the Gulfstar 40 Sailmaster is 7.64 kn knots, calculated from its waterline length.

How much does a Gulfstar 40 Sailmaster weigh?

The Gulfstar 40 Sailmaster has a displacement of 20,000.00 lb and a length overall (LOA) of 39.92 ft.

Who designed the Gulfstar 40 Sailmaster?

The Gulfstar 40 Sailmaster was designed by Lazarra, first built in 1980.