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Gulfstar 36 Ms Ph
Designer: Richard C. Lazzara  ·  Builder: Gulfstar  ·  First built: 1971
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About the Gulfstar 36 Ms Ph

Designed by Richard C. Lazzara and built by Gulfstar beginning in 1971, this 36-footer represents the builder's approach to comfortable coastal cruising during the early days of production fiberglass sailboats. The masthead sloop rig and long keel configuration reflect traditional design principles that prioritize stability and seaworthiness over racing performance. With a displacement of 15,000 pounds and a comfort ratio of 26.16, this vessel falls into the comfortable cruising category, offering a steady platform for extended passages. The long keel provides excellent tracking ability and contributes to the boat's forgiving handling characteristics, making it well-suited for both novice and experienced sailors. The shallow 3-foot draft opens up cruising possibilities in areas where deeper-keeled boats cannot venture. The capsize screening formula of 1.95 indicates good stability for coastal and offshore work, while the SA/Displacement ratio of 13.33 suggests moderate sailing performance typical of cruising-oriented designs from this era. Gulfstar boats from the 1970s developed a reputation for solid construction and practical layouts, appealing to sailors seeking reliable passage-makers rather than racing machines. The 80-horsepower engine provides adequate auxiliary power for maneuvering in tight quarters and powering through calms.

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.
$23,000 – $23,000
typical asking price
Median $23,000  ·  1 listing used
All listings
$23,000 – $23,000 1
Rate a listing price
$
About this estimate
  • Prices are based on recent asking prices from public listings — not actual sale prices, which are typically lower.
  • Condition is not factored in. A well-maintained boat with new sails and engine can be worth significantly more than a project boat of the same model.
  • Location affects price. Boats in landlocked states or areas with fewer buyers often sell for less than those on the coast.
  • Year of manufacture is not filtered. Older examples of this model will generally be priced lower than newer ones.
  • Included equipment varies widely. A boat with a full suite of electronics, dodger, and new standing rigging may command a large premium.
  • Outliers are automatically excluded using statistical filtering to improve accuracy, but some bad data may remain.
Core Dimensions
LOA (Length Overall) 36.00 ft / 10.97 m
LWL (Waterline Length) 30.83 ft / 9.40 m
Beam 12.00 ft / 3.66 m
Max Draft 3.00 ft / 0.91 m
Displacement 15,000.00 lb / 6,804 kg
Ballast Type Lead
Sail Area (Reported) 505.00 ft² / 46.92 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction FG
Designer Richard C. Lazzara
Builder Gulfstar
First Built 1971
Related Sailboats Gulfstar 36 Ms (Twin Cabin)
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
13.33
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
228.52
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
26.16
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
1.95
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. 7.44 kn
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
1.98
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. 1,321.91 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 13.34
Rig Dimensions
I (Foretriangle Height) 38.17 ft / 11.63 m
J (Foretriangle Base) 12.87 ft / 3.92 m
P (Mainsail Luff) 31.70 ft / 9.66 m
E (Mainsail Foot) 16.38 ft / 4.99 m
SA Fore 245.62 ft² / 22.82 m²
SA Main 259.62 ft² / 24.12 m²
SA Total (100%) 505.24 ft² / 46.94 m²
Est. Forestay Length 40.28 ft / 12.28 m
Mast Height (DWL) 43.00 ft / 13.11 m
Engine & Accommodations
Engine Type Diesel
Horsepower 80
Fuel Capacity 105 gals / 397 L
Water Capacity 100 gals / 379 L
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