The Seidelmann 30 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.
6.7 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 25.0′, the Seidelmann 30 tops out around 6.7 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √25.0′ LWL = 6.7 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
162s/nm
Typical cruiser — designed for comfort and ease, not podium finishes.
Ballast / Displacement
47.9%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
269
Moderate-heavy — carries provisions well, deliberate in light air.
Hull Speed
6.7kts
Pounds/Inch Immersion
6lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Seidelmann 30 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Seidelmann 30
Typical cruiser — designed for comfort and ease, not podium finishes.
San Juan 30
Pearson 30
Seidelmann 299
Cape Dory 300 Ms
How It Compares
Side-by-side with the boats most often cross-shopped against the Seidelmann 30.
| Seidelmann 30 | Cape Dory 300 Ms | Morgan Out Island 30 | Pearson 30 | San Juan 30 | Seidelmann 299 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 29.8 | 29.9 | 29.8 | 29.8 | 29.9 | 29.9 |
| LWL | 25.0 | 26.5 | 24.8 | 25.0 | 23.7 | 24.0 |
| Beam | 12.0 | 11.4 | 9.2 | 9.5 | 10.1 | 11.0 |
| Displacement | 9 | 11 | 9 | 8 | 7 | 8 |
| Ballast | 4 | 4 | 3 | 3 | 3 | 3 |
| Sail Area | — | 442 | 375 | 445 | 402 | 429 |
| Performance | ||||||
| PHRF | 162 | 293 | — | 174 | 168 | 180 |
| SA/Disp | — | 13.9 | 13.4 | 17.4 | 17.3 | 17.2 |
| Bal/Disp | 47.9 | 39.1 | 31.6 | 42.8 | — | 45.0 |
| Comfort | — | 25.2 | 29.2 | 24.3 | 20.2 | 19.7 |
| Capsize | — | 2.03 | 1.73 | 1.88 | 2.09 | 2.20 |
| Hull Speed | — | 6.9 | 6.7 | 6.7 | 6.5 | 6.6 |