Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
6.6 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 24.0′, the Spencer 30 tops out around 6.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √24.0′ LWL = 6.6 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Ballast / Displacement
46.1%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
224
Moderate — a good balance of speed and load-carrying ability.
Hull Speed
6.6kts
Pounds/Inch Immersion
5lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Spencer 30 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Yankee 30 Mki
Contest 30
How It Compares
Side-by-side with the boats most often cross-shopped against the Spencer 30.
| Spencer 30 | Arpege 30 Dufour | Cal 3 30 | Contest 30 | Newport 30 2 | Yankee 30 Mki | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 30.1 | 30.0 | 30.1 | 30.0 | 30.0 | 30.0 |
| LWL | 24.0 | 22.0 | 26.3 | 24.9 | 26.5 | 23.0 |
| Beam | 10.1 | 9.9 | 10.2 | 9.0 | 10.7 | 9.0 |
| Displacement | 6 | 7 | 10 | 8 | 8 | 8 |
| Ballast | 3 | 3 | 5 | 4 | 2 | 4 |
| Sail Area | — | 382 | 474 | 362 | 414 | 430 |
| Performance | ||||||
| PHRF | — | — | — | 224 | — | 210 |
| SA/Disp | — | 15.7 | 15.9 | 13.6 | 16.6 | 16.3 |
| Bal/Disp | 46.1 | 39.6 | 47.6 | 45.4 | — | 47.5 |
| Comfort | — | 23.0 | 26.9 | 27.6 | 19.2 | 28.7 |
| Capsize | — | 2.01 | 1.86 | 1.75 | 2.14 | 1.75 |
| Hull Speed | — | 6.3 | 6.9 | 6.7 | 6.9 | 6.4 |