Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
10.4 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 60.3′, the Swan 77 tops out around 10.4 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √60.3′ LWL = 10.4 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
35.3%
Typical cruising ballast — balanced stability and motion underway.
Displacement / Length
229
Moderate — a good balance of speed and load-carrying ability.
Hull Speed
10.4kts
Pounds/Inch Immersion
25lbs
Weight needed to sink the hull one inch — loading sensitivity.
How It Compares
Side-by-side with the boats most often cross-shopped against the Swan 77.
| Swan 77 | Baltic 73 | Cnb 78 | Oyster 745 | Swan 76 Dh | Swan 80 2 S | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 78.8 | 73.2 | 78.5 | 74.6 | 76.3 | 82.3 |
| LWL | 60.3 | 60.7 | 72.8 | 65.7 | 61.3 | 72.8 |
| Beam | 19.7 | 18.0 | 20.0 | 19.4 | 19.0 | 20.0 |
| Displacement | 112 | 77 | 105 | 118 | 105 | 79 |
| Ballast | 39 | 29 | 27 | — | 29 | 39 |
| Sail Area | — | 2 | 3 | 3 | 2 | 3 |
| Performance | ||||||
| SA/Disp | — | 22.0 | 23.6 | 19.9 | 17.6 | 28.9 |
| Bal/Disp | 35.3 | 38.6 | 26.3 | — | — | — |
| Comfort | — | 39.3 | 40.5 | 51.9 | 49.0 | 30.1 |
| Capsize | — | 1.70 | 1.70 | 1.58 | 1.61 | 1.86 |
| Hull Speed | — | 10.4 | 11.4 | 10.9 | 10.5 | 11.4 |