The Nacra 450 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.
4.8 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
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
61
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
2.0
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
4.87
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Hull Speed
4.8kts
Pounds/Inch Immersion
2lbs
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
2.0
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
4.87
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 Nacra 450.
| Nacra 450 | Menger Cat 15 | Sage Cat 15 | Tasar | Thom Cat 15 | Vanguard 15 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 15.0 | 15.0 | 15.2 | 14.8 | 15.0 | 15.3 |
| LWL | — | 15.0 | 14.5 | 14.0 | 15.0 | 15.0 |
| Beam | 8.0 | 7.0 | 6.4 | 5.8 | 7.0 | 5.5 |
| Displacement | 285 | 700 | 800 | 141 | 700 | 200 |
| Ballast | — | — | 225 | — | — | — |
| Sail Area | 184 | 145 | 122 | 123 | 145 | 127 |
| Performance | ||||||
| SA/Disp | — | 29.5 | 22.7 | 72.7 | 29.5 | 59.5 |
| Bal/Disp | — | — | 28.1 | — | — | — |
| Comfort | 2.0 | 5.4 | 7.1 | 1.5 | 5.4 | 2.1 |
| Capsize | 4.87 | 3.16 | 2.77 | 4.42 | 3.16 | 3.76 |
| Hull Speed | 4.8 | 5.2 | 5.1 | 5.0 | 5.2 | 5.2 |