The Privilege 585 is with a quick, snappy motion best suited to day sailing.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
9.9 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 55.0′, the Privilege 585 tops out around 9.9 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √55.0′ LWL = 9.9 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
105
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
11.6
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
3.57
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Hull Speed
9.9kts
Pounds/Inch Immersion
6,673lbs
Weight needed to sink the hull one inch — loading sensitivity.
Motion & Offshore Suitability
Two ratios that matter most when you're planning passages — how the boat feels in a seaway, and whether the hull geometry is suitable for open ocean.
Comfort Ratio
11.6
Quick, snappy motion — better for day sails and racing than long passages.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
3.57
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
How It Compares
Side-by-side with the boats most often cross-shopped against the Privilege 585.
| Privilege 585 | Gemini 105Mc | |
|---|---|---|
| Dimensions | ||
| LOA | 55.8 | 33.5 |
| LWL | 55.0 | 31.8 |
| Beam | 30.3 | 14.0 |
| Displacement | 39,200 | 8,000 |
| Sail Area | — | 690 |
| Performance | ||
| SA/Disp | — | 27.6 |
| Comfort | 11.6 | 11.3 |
| Capsize | 3.57 | 2.80 |
| Hull Speed | 9.9 | 7.6 |