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421data points analyzed by Sailpages.com to compile this GULFSTAR 50 buyer’s report
GULFSTAR 50

GULFSTAR 50

Gulfstar Yachts🇺🇸· Design: Lazarra
$120,367 avg$29,000 – $200,000 (8 listings)1975–1980172 built
$4.5K – $12K est. annual maintenance
Bluewater CruisermonoMasthead SloopFin

Specifications

Hull

LOA50 ft
LWL39.67 ft
Beam13.67 ft
Draft5.5 ft
Displacement35,000 lb
Ballast10,500 lb
Hull speed1.34·√LWL8.4 kn

Rig & Sails

Iforetriangle height50.9 ft
Jforetriangle base19.1 ft
Pmainsail luff43.08 ft
Emainsail foot15.29 ft
PYmizzen luff27 ft
EYmizzen foot11 ft
FLforestay19.1 ft
Mainsail928.1 sq ft
Jib (100%)486.1 sq ft
Spinnaker826.4 sq ft

About the GULFSTAR 50

Available as a sloop or ketch. Sometimes referred to as the GULFSTAR CSY 50 though it was never built specifically for or by CSY, most originally went into the charter trade. Ketch rig: I: 50.90' / 15.51m J: 19.10' / 5.82m P: 43.08' / 13.13m E: 15.29' / 4.66m PY: 27.00' / 8.23m EY: 11.00' / 3.35m Sail Area (100% fore+main triangles): 963.94 ft2/89.55 m2 Tall sloop: I: 55.00' / 16.76m J: 19.10' / 5.82m P: 47.50' / 14.48m E: 19.00' / 5.79m Sail Area (100% fore+main triangles): 976.50 ft2/90.72 m2

Sailpages Buyer's Take

Designed by Lazarra and built by Gulfstar Yachts (USA) between 1975 and 1980, the Gulfstar 50 is a substantial cruising sloop with a production run of 172 hulls. It is characterized by its heavy displacement of 35000.0 lb and a beam of 13.67 ft, offering a stable and comfortable platform for long-range cruising.

Best for:
This vessel is best suited for experienced coastal and offshore cruisers who prioritize comfort and stability over speed, particularly those seeking a spacious interior for extended passages. Its heavy displacement and fin keel design make it well-regarded for bluewater passages, though it requires diligent maintenance to remain seaworthy.
Bluewater capability:
With a displacement of 35000.0 lb and a capsize ratio of 1.68, the Gulfstar 50 is inherently stable and well-suited for offshore passages, provided critical structural issues like keel smiles and deck core moisture are addressed.
Comparables:
Comparable boats from this era include the Tartan 44 and the O'Day 42, which share similar heavy-displacement characteristics and cruising-focused layouts. The Gulfstar 50 distinguishes itself with a wider beam and more luxurious interior finishes, appealing to owners who value space and comfort in a 50-foot package.

Performance

Comfort38.9
Capsize1.68
SA/Disp13.4
Disp/Len250
Bal/Disp30.0

Estimated Value

Low Confidence
Based on 7 listings
Low
$78,950
Estimated Value
$116,550
High
$118,729
Inflation-adjusted to 2026 USD

Asking price by model year

6 listings · boat years 19751980 · median $125,900

$0$100k$200kmedian $125,900197519801977 50 · $49,000 · FL, US1980 Gulfstar 50 · $75,000 · California, MX1975 Gulfstar 50 · $125,900 · Florida, US1978 Gulfstar Kech 50 · $200,000 · Michigan, US1977 50 · $150,000 · UY1977 Gulfstar gulfstar 50 · $29,000 · FLAsking price (USD)Boat model year

Each dot is one listing · hover for details · dashed red line marks the median · obvious data-entry outliers (top & bottom 2.5%) excluded.

Estimated Cost of Ownership

Based on 50ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$4.5K – $12K
Hull, rigging, sails, engine service
Annual Docking
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Known Issues & Pre-Purchase Inspection

29 reported issues across 8 systems for the GULFSTAR 50, compiled from owner reports in sailing forums and owner-association material.

8 critical12 major9 minor
Structural6Deck6Hull4Engine4Rudder3Rigging3Plumbing2Keel1

Unlock the full inspection report

Thinking of buying a GULFSTAR 50? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.

  • All 29 specific issues — severity, symptoms & fixes
  • Model-specific pre-purchase inspection checklist
  • Downloadable PDF to take to your surveyor — yours to keep

One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep

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