The Apache 45 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.
8.6 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 41.0′, the Apache 45 tops out around 8.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √41.0′ LWL = 8.6 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Comfort Ratio
9.7
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
3.24
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Hull Speed
8.6kts
Pounds/Inch Immersion
17lbs
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
9.7
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
3.24
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
PHRF Fleet Position
Where the Apache 45 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Whitby 45
How It Compares
Side-by-side with the boats most often cross-shopped against the Apache 45.
| Apache 45 | Irwin 45 | Leopard 45 | Morgan 45 2 | Outremer 45 | Whitby 45 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 45.0 | 45.0 | 45.0 | 45.0 | 45.0 | 45.0 |
| LWL | 41.0 | 32.0 | 42.9 | 39.3 | 44.6 | 33.0 |
| Beam | 19.5 | 11.5 | 24.2 | 13.3 | 23.6 | 12.0 |
| Displacement | 14 | 23 | 32 | 30 | 15 | 23 |
| Ballast | — | 10 | — | — | — | 11 |
| Sail Area | 710 | 882 | 1 | 734 | 1 | 913 |
| Performance | ||||||
| PHRF | — | — | — | — | — | 102 |
| SA/Disp | — | 17.5 | 18.6 | 12.2 | — | 17.7 |
| Comfort | 9.7 | 38.3 | 16.6 | 36.0 | 8.1 | 36.7 |
| Capsize | 3.24 | 1.62 | 3.03 | 1.72 | 3.76 | 1.67 |
| Hull Speed | — | 7.6 | 8.8 | 8.4 | 9.0 | 7.7 |