Thames Marine Mirage 29
Thames Marine · 1983
twin keelMasthead sloopUnited Kingdom
The Thames Marine Mirage 29 is a 29-foot masthead sloop sailboat built by Thames Marine, first launched in 1983.
General
| Builder | Thames Marine |
|---|---|
| Designer | — |
| Years built | 1983 |
| Hull type | twin keel |
| Rig type | Masthead sloop |
| Construction | fiberglass |
| Origin | United Kingdom |
Dimensions
| LOA | 28.83 ft8.79 m |
|---|---|
| LWL | 25.25 ft7.70 m |
| Beam | 10.50 ft3.20 m |
| Draft (max) | 3.75 ft1.14 m |
| Displacement | 8,267 lb3,750 kg |
| Ballast | —— |
| Sail Area | 353 ft²32.8 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 13.81 Under-canvassed — heavy-air / motorsailing
Displacement / Length 229 Moderate
Comfort Ratio 21.2 Coastal cruiser
Capsize Screening 2.08 Better suited to coastal use (> 2.0)
Hull Speed 6.7 kn Theoretical max displacement speed
How these numbers are calculated
- SA / Displacement
SA ÷ (Disp ÷ 64)^(2/3)— Power-to-weight. < 16 under-canvassed, 16–20 cruiser, > 20 racer.- Ballast / Displacement
Ballast ÷ Disp × 100— Stability/stiffness. Higher carries sail better.- Displacement / Length
Disp(lt) ÷ (0.01 · LWL)³— < 100 ultralight, 100–200 light, 200–300 moderate, > 300 heavy.- Comfort Ratio (Brewer)
Disp ÷ (0.65 · (0.7·LWL + 0.3·LOA) · Beam^1.33)— Motion in a seaway. Higher = more comfortable offshore.- Capsize Screening
Beam ÷ (Disp ÷ 64)^(1/3)— ≤ 2.0 favored for offshore; > 2.0 better for coastal use.- Hull Speed
1.34 · √LWL— Theoretical max displacement speed in knots.
Estimated price
$24,000 typical range $19,000 – $29,000
⚠ Rough estimate only — not market data. Derived from a simple model based on length and hull age; actual asking prices vary widely with condition, equipment, engine hours and location.
