Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
4.4 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 10.8′, the Twitchell 12 tops out around 4.4 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √10.8′ LWL = 4.4 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Displacement / Length
58
Ultralight — responsive and fast, but carries less stores.
Hull Speed
4.4kts
Pounds/Inch Immersion
1lbs
Weight needed to sink the hull one inch — loading sensitivity.
How It Compares
Side-by-side with the boats most often cross-shopped against the Twitchell 12.
| Twitchell 12 | Byte | Captiva Escape | Hobie Bravo | Hobie One 12 | Splash | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 12.0 | 12.0 | 11.5 | 12.0 | 12.0 | 11.8 |
| LWL | 10.8 | 10.5 | — | — | 10.2 | 11.8 |
| Beam | 4.5 | 4.3 | 5.0 | 4.4 | 5.0 | 5.1 |
| Displacement | 165 | 99 | 195 | 195 | 125 | 155 |
| Sail Area | — | 58 | 67 | 86 | — | 59 |
| Performance | ||||||
| SA/Disp | — | 43.4 | — | 41.0 | — | 32.7 |
| Comfort | — | 2.0 | 3.4 | 3.9 | — | 2.4 |
| Capsize | — | 3.68 | — | 3.05 | — | 3.76 |
| Hull Speed | — | 4.3 | 4.2 | 4.3 | — | 4.6 |