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Gulfstar 37
Designer: Vince Lazzara  ·  Builder: Gulfstar Yachts  ·  First built: 1976
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About the Gulfstar 37

Built during Gulfstar's productive years in the 1970s and early 1980s, this 37-footer represents the Florida builder's commitment to practical cruising sailboats designed for comfortable coastal and offshore passages. Gulfstar established a solid reputation for constructing well-built fiberglass vessels that balanced performance with livability, and the 37 continues this tradition. The design emphasizes cruising comfort over racing performance, featuring the moderate displacement and sail plan typical of boats intended for extended coastal cruising and offshore passages. Her construction follows Gulfstar's established methods of solid fiberglass layup, contributing to the durability that has kept many of these boats actively sailing decades after launch. Like other Gulfstar models, the 37 likely features a spacious interior layout that maximizes accommodation in the available length, making her well-suited for couples or small families planning extended cruises. The cockpit design typically emphasizes safety and comfort for passage-making rather than racing efficiency. While detailed specifications remain limited, the boat's size and Gulfstar's design philosophy suggest she's capable of handling both coastal waters and offshore passages, appealing to cruisers seeking a reliable, comfortable platform for extended sailing adventures without the complexity of high-performance racing designs.

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.
$25,000 – $39,950
typical asking price
Median $32,475  ·  4 listings used
All listings
$25,000 – $39,950 4
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) 37.00 ft / 11.28 m
LWL (Waterline Length) 32.00 ft / 9.75 m
Beam 11.83 ft / 3.61 m
Max Draft 4.67 ft / 1.42 m
Displacement 19,500.00 lb / 8,845 kg
Ballast 8,000.00 lb / 3,629 kg
Sail Area (Reported) 614.00 ft² / 57.04 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Vince Lazzara
Builder Gulfstar Yachts
First Built 1976
Last Built 1979
Related Sailboats Irwin 37 3 · Endeavour 37 · Esprit 37 · Irwin 37 4 · Valiant 37
Owner Reviews

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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
153
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
13.61
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
33.5
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
1.76
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. 7.58
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
1.79
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) 46.16
J (Foretriangle Base) 15.8
P (Mainsail Luff) 39.29
E (Mainsail Foot) 14.5
SA Fore 364.66
SA Main 284.85
How It Compares

vs. Endeavour 37, Esprit 37, Irwin 37 3, Irwin 37 4, Valiant 37

This boat Similar boats
Dimensions
LOA
Gulfstar 37 ★
37.0 ft
Endeavour 37
37.0 ft
Esprit 37
37.0 ft
Irwin 37 3
37.0 ft
Irwin 37 4
37.0 ft
Valiant 37
37.0 ft
LWL
Gulfstar 37 ★
32.0 ft
Endeavour 37
30.0 ft
Esprit 37
31.6 ft
Irwin 37 3
30.0 ft
Irwin 37 4
30.0 ft
Valiant 37
31.6 ft
Beam
Gulfstar 37 ★
11.8 ft
Endeavour 37
11.6 ft
Esprit 37
11.5 ft
Irwin 37 3
11.5 ft
Irwin 37 4
11.5 ft
Valiant 37
11.5 ft
Displacement
Gulfstar 37 ★
19 lbs
Endeavour 37
20 lbs
Esprit 37
17 lbs
Irwin 37 3
20 lbs
Irwin 37 4
20 lbs
Valiant 37
17 lbs
Ballast
Gulfstar 37 ★
8 lbs
Endeavour 37
8 lbs
Esprit 37
6 lbs
Irwin 37 3
7 lbs
Irwin 37 4
6 lbs
Valiant 37
6 lbs
Sail Area
Gulfstar 37 ★
614 sq ft
Endeavour 37
Esprit 37
667 sq ft
Irwin 37 3
630 sq ft
Irwin 37 4
627 sq ft
Valiant 37
667 sq ft
Performance
PHRF Rating (lower = faster)
Gulfstar 37 ★
153 s/nm
Endeavour 37
174 s/nm
Esprit 37
150 s/nm
Irwin 37 3
Irwin 37 4
Valiant 37
SA / Displacement (higher = more powerful)
Gulfstar 37 ★
13.6
Endeavour 37
Esprit 37
16.2
Irwin 37 3
13.7
Irwin 37 4
13.7
Valiant 37
16.2
Ballast / Disp (higher = stiffer)
Gulfstar 37 ★
Endeavour 37
40.0 %
Esprit 37
Irwin 37 3
39.0 %
Irwin 37 4
Valiant 37
39.4 %
Comfort Ratio (higher = more comfortable offshore)
Gulfstar 37 ★
33.5
Endeavour 37
Esprit 37
30.6
Irwin 37 3
37.2
Irwin 37 4
37.2
Valiant 37
30.6
Capsize Screening (lower = safer)
Gulfstar 37 ★
1.76
Endeavour 37
Esprit 37
1.79
Irwin 37 3
1.70
Irwin 37 4
1.70
Valiant 37
1.79
Displacement / Length (lower = lighter)
Gulfstar 37 ★
Endeavour 37
330
Esprit 37
Irwin 37 3
330
Irwin 37 4
Valiant 37
240
Hull Speed
Gulfstar 37 ★
7.6 kts
Endeavour 37
Esprit 37
7.5 kts
Irwin 37 3
7.3 kts
Irwin 37 4
7.3 kts
Valiant 37
7.5 kts
Speed Number (higher = faster)
Gulfstar 37 ★
1.8
Endeavour 37
Esprit 37
2.2
Irwin 37 3
1.3
Irwin 37 4
1.3
Valiant 37
2.2
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