COM-PAC 19
Com-Pac Yachts · designed by Robert K. Johnson · 1979
long keelMasthead sloopUnited States
The COM-PAC 19 is a 20-foot masthead sloop sailboat designed by Robert K. Johnson and built by Com-Pac Yachts, first launched in 1979.
General
| Builder | Com-Pac Yachts |
|---|---|
| Designer | Robert K. Johnson |
| Years built | 1979 |
| Hull type | long keel |
| Rig type | Masthead sloop |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 20.08 ft6.12 m |
|---|---|
| LWL | 16.33 ft4.98 m |
| Beam | 7.00 ft2.13 m |
| Draft (max) | 2.00 ft0.61 m |
| Displacement | 2,000 lb907 kg |
| Ballast | 800 lb363 kg |
| Sail Area | 153 ft²14.2 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 15.42 Under-canvassed — heavy-air / motorsailing
Ballast / Displacement 40.0 % Higher = stiffer / more sail-carrying power
Displacement / Length 205 Moderate
Comfort Ratio 13.3 Racing / light coastal
Capsize Screening 2.22 Better suited to coastal use (> 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
$11,000 typical range $9,000 – $13,000
⚠ 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.
