The Dee 25 is with a steady, comfortable ride offshore.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
6.7 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 25.0′, the Dee 25 tops out around 6.7 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √25.0′ LWL = 6.7 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
45.5%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
314
Moderate-heavy — carries provisions well, deliberate in light air.
Comfort Ratio
32.8
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.67
Below the 2.0 offshore threshold — acceptable for ocean passages.
Hull Speed
6.7kts
Pounds/Inch Immersion
826lbs
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
32.8
Good offshore comfort — steady enough for multi-day passages.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
1.67
Below the 2.0 offshore threshold — acceptable for ocean passages.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
PHRF Fleet Position
Where the Dee 25 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Dufour 31
Monsun 31
Bombay Clipper 31
How It Compares
Side-by-side with the boats most often cross-shopped against the Dee 25.
| Dee 25 | Bombay Clipper 31 | Dufour 31 | Hallberg Rassy 312 | Monsun 31 | Orion 27 Pacific Seacraft | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 30.8 | 31.0 | 30.8 | 30.9 | 30.8 | 30.9 |
| LWL | 25.0 | 25.6 | 23.0 | 25.3 | 24.7 | 22.2 |
| Beam | 9.3 | 11.0 | 10.5 | 10.1 | 9.4 | 9.3 |
| Displacement | 11 | 10 | 9 | 10 | 9 | 10 |
| Ballast | 5 | 3 | 3 | 4 | 4 | 3 |
| Sail Area | — | — | 395 | 484 | 414 | 508 |
| Performance | ||||||
| PHRF | — | 234 | 168 | — | 204 | — |
| SA/Disp | — | — | 14.0 | 15.9 | 15.1 | 17.6 |
| Bal/Disp | 45.5 | 34.0 | 38.5 | — | 45.4 | 32.0 |
| Comfort | 32.8 | — | 25.5 | 28.5 | 27.2 | 32.2 |
| Capsize | 1.67 | — | 1.98 | 1.83 | 1.80 | 1.72 |
| Hull Speed | 6.7 | — | 6.4 | 6.7 | 6.7 | 6.3 |