Yngling
O'Day Corp. · designed by Jan Herman Linge · 1967
keelboatBermuda rigNorway
The Yngling is a 21-foot bermuda rig sailboat designed by Jan Herman Linge and built by O'Day Corp., first launched in 1967.
General
| Builder | O'Day Corp. |
|---|---|
| Designer | Jan Herman Linge |
| Years built | 1967 |
| Hull type | keelboat |
| Rig type | Bermuda rig |
| Construction | — |
| Origin | Norway |
Dimensions
| LOA | 20.83 ft6.35 m |
|---|---|
| LWL | 15.42 ft4.70 m |
| Beam | 5.68 ft1.73 m |
| Draft (max) | 3.44 ft1.05 m |
| Displacement | 1,323 lb600 kg |
| Ballast | 683 lb310 kg |
| Sail Area | 156 ft²14.5 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 20.71 Performance / racer — powered up
Ballast / Displacement 51.6 % Higher = stiffer / more sail-carrying power
Displacement / Length 161 Light
Comfort Ratio 11.9 Racing / light coastal
Capsize Screening 2.07 Better suited to coastal use (> 2.0)
Hull Speed 5.3 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.
