Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
5.7 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 18.2′, the Sandstream 665 tops out around 5.7 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √18.2′ LWL = 5.7 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Ballast / Displacement
25.3%
Light ballast — tends to be tender; reef earlier than the numbers suggest.
Displacement / Length
258
Moderate-heavy — carries provisions well, deliberate in light air.
Hull Speed
5.7kts
Pounds/Inch Immersion
3lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Sandstream 665 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Seafarer 22
Alberg 22
Oday 22
How It Compares
Side-by-side with the boats most often cross-shopped against the Sandstream 665.
| Sandstream 665 | Alberg 22 | Lm 22 | North Star 22 | Oday 22 | Seafarer 22 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 21.8 | 22.0 | 22.0 | 22.0 | 21.7 | 21.7 |
| LWL | 18.2 | 16.0 | 18.0 | 19.5 | 18.9 | 18.3 |
| Beam | 8.2 | 7.0 | 8.7 | 7.6 | 7.2 | 7.4 |
| Displacement | 3 | 3 | 3 | 2 | 2 | 2 |
| Ballast | 882 | 1 | 1 | 825 | 800 | 780 |
| Sail Area | — | 236 | 213 | — | — | 207 |
| Performance | ||||||
| PHRF | — | 285 | — | — | 285 | 282 |
| SA/Disp | — | 17.4 | 14.8 | — | — | 19.1 |
| Bal/Disp | 25.3 | 48.1 | — | 37.5 | 36.7 | — |
| Comfort | — | 20.8 | 16.0 | — | — | 12.7 |
| Capsize | — | 1.90 | 2.28 | — | — | 2.25 |
| Hull Speed | — | 5.4 | 5.7 | — | — | 5.7 |