Used Tartan 10 Sailboats for Sale

The search results provide a lot of good information for each section.

Summary of findings:

• Designer: Sparkman & Stephens (S&S).
• Purpose: One-design racer, designed for competitive racing and lively performance. Not designed for handicap ratings. Minimal accommodations, not suited for extensive cruising.
• Production: First built in 1978. Approximately 400 built.
• Design Philosophy: Sparkman & Stephens designed it as a one-design racer. Emphasized easy driving, long narrow hull, and no rule-induced bumps or hollows for erratic handling. Focused on competitive one-design racing.
• Variations: The Tartan 10 has a flush deck. There's also an LS-10, which shares interchangeable components but has 34 listed changes, suggesting a later iteration or modification.
• Sailing Performance: Praised for excellent sailing performance, lively, easy to maneuver and crew. Can handle heavy winds. Good in light air, but leeward weight is key. Owners rarely complain about performance.
• Accommodations: Minimal below deck. Not suited for extensive cruising. Often described as a "racing boat design" or "day racer". One owner mentioned converting for cruising, suggesting limited standard amenities. Interior is often painted fiberglass.
• Owner's Perspectives (Strengths): Fast, cheap, excellent sailing characteristics, very well built (like most Tartans), solid construction, comfortable motion in a seaway. Joy to day race, lively performance, affordable. Agile boats that can handle anything.
• Owner's Perspectives (Weaknesses/Common Issues): Bent rudder shafts, failed attachments of fiberglass stringers and floors, hull cracks near the keel area. Some problems addressed by Tartan Marine. Not designed for handicap rules, leading to astronomical IOR ratings. Original deck fittings may develop leaks (general Tartan issue, not specific to T10, but a common age-related issue for fiberglass boats).

Now I can proceed to write the article.

Calculations for Performance Ratios:

• displacement_lbs: 6700
• sail_area_total_calc_sqft: 486.72
• ballast_lbs: 3340
• lwl_ft: 27.0
• Sail Area to Displacement (SA/Disp):SA/Disp = Sail Area / (Displacement / 64)^ (2/3)SA/Disp = 486.72 / (6700 / 64)^(2/3)SA/Disp = 486.72 / (104.6875)^(2/3)SA/Disp = 486.72 / 22.37SA/Disp = 21.75 (Indicates very good light-air performance)
• Ballast to Displacement (Ballast/Disp):Ballast/Disp = Ballast / DisplacementBallast/Disp = 3340 / 6700Ballast/Disp = 0.4985 (Approximately 50%, indicating high stiffness and stability)
• Displacement to Length (Disp/LWL):Disp/LWL = Displacement / (0.01 x LWL)^3 - Correction: The formula for D/L is Displacement in lbs / (0.01 * LWL in feet)^3 * 2240 (for long tons) OR Displacement in lbs / (0.01 * LWL in feet)^3 (if using just pounds as the unit in the denominator for the "factor" without converting to tons). Let's use the simpler form where a lower number indicates lighter. A more common ratio calculation is Displacement in pounds / (LWL in feet / 100)^3. Disp/LWL = 6700 / (27.0 / 100)^3Disp/LWL = 6700 / (0.27)^3Disp/LWL = 6700 / 0.019683Disp/LWL = 340.39 (This value is usually compared to a standard range; values below 200 are light, 200-300 moderate, above 300 heavy. This indicates a moderate-to-heavy displacement for its waterline length, which seems counter to the "lightly driven" description. Let me recheck the D/L calculation and interpretation based on common understanding in sailing. The D/L ratio for a performance boat should be lower. The calculation I used might be for metric or a different standard. The result 152 was based on 6700 / ((27/100)^3 * 2240). Let's use the definition: D/L = Displacement in pounds / (0.01 LWL in feet) ^ 3 * 2240, where 2240 converts to long tons. No, it's just D/L = Displacement in pounds / (0.01 * LWL in feet)^3 is the common interpretation for the "Displacement-to-Length Ratio". A more useful general classification is simply:
  • Ultralight: <100
  • Light: 100-200
  • Moderate: 200-300
  • Heavy: 300+ Given the search results describe it as "easily driven" and "performance-oriented", a light-to-moderate classification would be more consistent. Let me use the formula I derived earlier Disp/LWL = 6700 / ( (27/100)^3 * 2240 ) = 152. This interpretation makes more sense for a performance racer.
  
  So, recalculated Disp/LWL = 152 (Light, performance-oriented).