Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
7.8 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 33.6′, the Ea 40 tops out around 7.8 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √33.6′ LWL = 7.8 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
44.4%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
256
Moderate-heavy — carries provisions well, deliberate in light air.
Hull Speed
7.8kts
Pounds/Inch Immersion
9lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Ea 40 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Intrepid 40
Endeavour 40
How It Compares
Side-by-side with the boats most often cross-shopped against the Ea 40.
| Ea 40 | Endeavour 40 | Intrepid 40 | Lancer 40 | Nicholson 40 Ac | Tartan 40 Offshore | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 40.0 | 40.0 | 40.0 | 40.0 | 40.0 | 40.0 |
| LWL | 33.6 | 32.0 | 32.8 | 33.7 | 30.5 | 36.0 |
| Beam | 12.1 | 13.0 | 12.6 | 12.0 | 11.5 | 13.3 |
| Displacement | 21 | 25 | 20 | 15 | 24 | 26 |
| Ballast | 9 | 9 | 7 | 4 | — | 10 |
| Sail Area | — | 788 | 749 | 689 | 940 | 788 |
| Performance | ||||||
| PHRF | — | 147 | 125 | — | — | — |
| SA/Disp | — | 14.8 | 16.3 | 17.8 | 17.9 | 14.4 |
| Bal/Disp | 44.4 | 36.0 | — | — | — | — |
| Comfort | — | 36.9 | 30.5 | 24.6 | 43.8 | 34.3 |
| Capsize | — | 1.78 | 1.86 | 1.93 | 1.59 | 1.80 |
| Hull Speed | — | 7.6 | 7.7 | 7.8 | 7.4 | 8.0 |