The Ufo 31 is designed for cruising comfort rather than racing.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
6.8 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 25.6′, the Ufo 31 tops out around 6.8 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √25.6′ LWL = 6.8 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
PHRF Rating
174s/nm
Typical cruiser — designed for comfort and ease, not podium finishes.
Ballast / Displacement
49.9%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
180
Moderate — a good balance of speed and load-carrying ability.
Hull Speed
6.8kts
Pounds/Inch Immersion
6lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Ufo 31 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Dehler 31
Ufo 31
Typical cruiser — designed for comfort and ease, not podium finishes.
Monsun 31
How It Compares
Side-by-side with the boats most often cross-shopped against the Ufo 31.
| Ufo 31 | Dehler 31 | Ericson 31 Independence | Granada 31 | Hallberg Rassy 312 | Monsun 31 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 30.9 | 30.8 | 30.9 | 30.8 | 30.9 | 30.8 |
| LWL | 25.6 | 24.3 | 23.9 | 24.2 | 25.3 | 24.7 |
| Beam | 10.0 | 10.2 | 10.4 | 10.0 | 10.1 | 9.4 |
| Displacement | 6 | 7 | 11 | 7 | 10 | 9 |
| Ballast | 3 | 2 | 4 | 3 | 4 | 4 |
| Sail Area | — | 443 | 457 | 430 | 484 | 414 |
| Performance | ||||||
| PHRF | 174 | 162 | — | — | — | 204 |
| SA/Disp | — | 19.3 | 14.5 | 17.4 | 15.9 | 15.1 |
| Bal/Disp | 49.9 | 40.6 | 39.5 | 45.7 | 44.9 | 45.4 |
| Comfort | — | 18.9 | 29.9 | 21.8 | 28.5 | 27.2 |
| Capsize | — | 2.12 | 1.86 | 2.01 | 1.83 | 1.80 |
| Hull Speed | — | 6.6 | 6.6 | 6.6 | 6.7 | 6.7 |