The Neptune Cruiser 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.
5.9 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 19.2′, the Neptune Cruiser tops out around 5.9 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √19.2′ LWL = 5.9 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Ballast / Displacement
47.0%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
160
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
15.1
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
1.85
Below the 2.0 offshore threshold — acceptable for ocean passages.
Hull Speed
5.9kts
Pounds/Inch Immersion
432lbs
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
15.1
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
1.85
Below the 2.0 offshore threshold — acceptable for ocean passages.
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 Neptune Cruiser.
| Neptune Cruiser | Cape Breton Jeanneau | Elizabethan 30 | Formosa 30 | La Cruiser | Wanderer 30 Laurent Giles | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 29.5 | 29.5 | 29.5 | 29.6 | 29.4 | 29.5 |
| LWL | 19.2 | 25.6 | 24.0 | 25.0 | 25.0 | 24.5 |
| Beam | 6.3 | 10.3 | 9.3 | 10.5 | 8.0 | 9.3 |
| Displacement | 2 | 7 | 7 | 10 | 6 | 18 |
| Ballast | 1 | 2 | 3 | 4 | 2 | — |
| Sail Area | — | 398 | 450 | 484 | 322 | 423 |
| Performance | ||||||
| SA/Disp | — | 16.3 | 19.2 | 15.9 | 15.3 | 9.9 |
| Bal/Disp | 47.0 | 35.7 | 48.1 | 37.0 | — | — |
| Comfort | 15.1 | 6.0 | 22.7 | 27.6 | 22.8 | 54.6 |
| Capsize | 1.85 | 2.93 | 1.91 | 1.90 | 1.75 | 1.43 |
| Hull Speed | 5.9 | 4.9 | 6.6 | 6.7 | 6.7 | 6.6 |