Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
5.0 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 14.0′, the Narrasketuck tops out around 5.0 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √14.0′ LWL = 5.0 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
130
Ultralight — responsive and fast, but carries less stores.
Hull Speed
5.0kts
Pounds/Inch Immersion
2lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Narrasketuck sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Highlander
Cygnus 20
How It Compares
Side-by-side with the boats most often cross-shopped against the Narrasketuck.
| Narrasketuck | Cygnus 20 | Flying Dutchman | Flying Fifteen | Ford 20 | Highlander | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 20.3 | 20.0 | 20.0 | 20.0 | 20.0 | 20.0 |
| LWL | 14.0 | 17.5 | — | 15.0 | 18.5 | 19.7 |
| Beam | 6.5 | 7.0 | 5.9 | 7.0 | 7.0 | 6.7 |
| Displacement | 800 | 600 | 287 | 725 | 950 | 830 |
| Ballast | — | — | — | 372 | — | — |
| Sail Area | — | 178 | 200 | 142 | 205 | 225 |
| Performance | ||||||
| PHRF | — | 261 | — | — | — | 191 |
| SA/Disp | — | 40.1 | 73.6 | 28.2 | 34.0 | 40.8 |
| Bal/Disp | — | — | — | 51.3 | — | — |
| Comfort | — | 3.8 | 2.3 | 5.1 | 5.8 | 5.2 |
| Capsize | — | 3.32 | 3.58 | 3.12 | 2.85 | 2.84 |
| Hull Speed | — | 5.6 | 5.5 | 5.2 | 5.8 | 5.9 |