Companion 21
Trump Yachts · designed by Aborn Smith Jr. · 1981
long keelBermuda rigUnited States
The Companion 21 is a 21-foot bermuda rig sailboat designed by Aborn Smith Jr. and built by Trump Yachts, first launched in 1981.
General
| Builder | Trump Yachts |
|---|---|
| Designer | Aborn Smith Jr. |
| Years built | 1981 |
| Hull type | long keel |
| Rig type | Bermuda rig |
| Construction | — |
| Origin | United States |
Dimensions
| LOA | 20.50 ft6.25 m |
|---|---|
| LWL | 16.50 ft5.03 m |
| Beam | 7.08 ft2.16 m |
| Draft (max) | 2.75 ft0.84 m |
| Displacement | 3,100 lb1,406 kg |
| Ballast | 1,000 lb454 kg |
| Sail Area | 218 ft²20.3 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 16.41 Cruiser — good all-round performance
Ballast / Displacement 32.3 % Higher = stiffer / more sail-carrying power
Displacement / Length 308 Heavy — bluewater displacement
Comfort Ratio 19.9 Racing / light coastal
Capsize Screening 1.94 Suited to offshore passages (≤ 2.0)
Hull Speed 5.4 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
$12,000 typical range $9,500 – $14,500
⚠ 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.
