The Penguin 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.
4.2 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
68
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
2.7
Quick, snappy motion — better for day sails and racing than long passages.
Hull Speed
4.2kts
Pounds/Inch Immersion
1lbs
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
2.7
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
How It Compares
Side-by-side with the boats most often cross-shopped against the Penguin.
| Penguin | Beverly Dinghy | Heron | Interclub Usa | Tech Dinghy | Weasel | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 11.4 | 11.5 | 11.3 | 11.5 | 12.0 | 11.3 |
| LWL | — | — | — | 11.5 | — | 10.0 |
| Beam | 4.7 | 4.5 | 4.5 | 4.6 | 4.7 | 5.5 |
| Displacement | 140 | 207 | 140 | 150 | 250 | 160 |
| Sail Area | — | 66 | 70 | 72 | 72 | — |
| Performance | ||||||
| SA/Disp | — | — | 41.6 | 40.8 | 29.1 | — |
| Comfort | 2.7 | 4.2 | 2.9 | 2.7 | — | — |
| Capsize | — | — | — | 3.45 | 2.97 | — |
| Hull Speed | 4.2 | 4.2 | 4.1 | 4.5 | — | — |