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Gulfstar 40 Cc
Designer: Lazzara  ·  Builder: Gulfstar Yachts  ·  First built: 1980
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About the Gulfstar 40 Cc

With its center cockpit configuration, this Gulfstar 40 represents the builder's focus on comfortable cruising accommodations during the brand's active years in the 1970s and 1980s. Gulfstar Marine built a reputation for producing solid fiberglass cruising sailboats that prioritized interior volume and livability over pure sailing performance. The center cockpit layout provides excellent separation between the forward and aft cabin spaces, making this design particularly appealing to couples or families seeking privacy while cruising. This configuration also elevates the helmsman position, offering improved visibility and command of the vessel during passages. Built during an era when many American manufacturers were establishing themselves in the cruising boat market, Gulfstar boats were known for their robust construction and practical approach to bluewater sailing. The 40-foot length places this model in the sweet spot for serious coastal and offshore cruising, offering enough interior space for extended voyaging while remaining manageable for a small crew. While detailed specifications remain limited, the Gulfstar 40 Cc exemplifies the classic American cruising boat philosophy of the period, emphasizing comfort and seaworthiness over racing-oriented performance characteristics.

Core Dimensions
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
Max Draft 6.30 ft / 1.92 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 Lazzara
Builder Gulfstar Yachts
First Built 1980
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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
15.37
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
32.23
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
1.78
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. 7.64
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
1.93
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) 47.0
J (Foretriangle Base) 16.5
P (Mainsail Luff) 39.75
E (Mainsail Foot) 16.0
SA Fore 387.75
SA Main 318.0
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