Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
6.3 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 22.2′, the Samphire 29 tops out around 6.3 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √22.2′ LWL = 6.3 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
349
Moderate-heavy — carries provisions well, deliberate in light air.
Hull Speed
6.3kts
Pounds/Inch Immersion
4lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Samphire 29 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Shipman 28
Alberg 29
How It Compares
Side-by-side with the boats most often cross-shopped against the Samphire 29.
| Samphire 29 | Alberg 29 | Hallberg Rassy 29 | Leisure 29 | Shipman 28 | Starlight 30 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 29.2 | 29.3 | 29.2 | 29.1 | 29.1 | 29.2 |
| LWL | 22.2 | 22.3 | 23.8 | 25.0 | 21.0 | 23.2 |
| Beam | 8.6 | 9.2 | 9.3 | 9.2 | 8.5 | 10.0 |
| Displacement | 8 | 9 | 8 | 7 | 6 | 7 |
| Ballast | — | 4 | 3 | 3 | 2 | 4 |
| Sail Area | — | 417 | 538 | 265 | 349 | 465 |
| Performance | ||||||
| PHRF | — | 225 | — | — | 198 | — |
| SA/Disp | — | 15.5 | 20.9 | 11.1 | 15.9 | 19.8 |
| Bal/Disp | — | 44.4 | 46.1 | 44.9 | — | 58.9 |
| Comfort | — | 29.9 | 26.2 | 22.9 | 25.1 | 21.0 |
| Capsize | — | 1.77 | 1.83 | 1.89 | 1.82 | 2.07 |
| Hull Speed | — | 6.3 | 6.5 | 6.7 | 6.1 | 6.5 |