The Dufour Classic 38 is aggressively canvassed for its weight, with acceptable motion comfort for coastal passages.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 32.5′, the Dufour Classic 38 tops out around 7.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √32.5′ LWL = 7.6 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
SA / Displacement
24.0
Performance-oriented — carries a lot of canvas for its weight.
Ballast / Displacement
34.2%
Typical cruising ballast — balanced stability and motion underway.
Displacement / Length
177
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
21.7
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
2.07
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
9lbs
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
21.7
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
2.07
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 Dufour Classic 38 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Hunter 37 Legend
108s/nm
Catalina 375
113s/nm
Estimated Speed by Wind
Rough boat speed estimates at different true wind speeds and points of sail — derived from hull speed, SA/D, and displacement, not measured polars.
| Point of Sail |
6 kts TWS |
10 kts TWS |
15 kts TWS |
20 kts TWS |
| Close-hauled40–50° |
3.6 |
4.5 |
5.1 |
5.3 |
| Close Reach60° |
4.3 |
5.5 |
6.1 |
6.4 |
| Beam Reach90° |
5.3 |
6.7 |
7.5 |
8.2 |
| Broad Reach120–135° |
4.9 |
6.2 |
7.0 |
7.5 |
| Run150–180° |
3.9 |
5.0 |
5.6 |
5.8 |
These are simplified estimates based on hull speed (7.6 kts),
SA/D (24.0), and empirical efficiency curves — not instrument-measured
polars. Real-world speed varies with sea state, bottom condition, sail trim, and current.
Speeds in gold approach hull speed;
bold gold means near or at hull speed.
Wind Range & Comfort Envelope
Estimated wind ranges for comfortable sailing on the Dufour Classic 38 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–5 kts
5–16 kts
16–24 kts
24+ kts
Ghosting
0–5 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
5–16 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
16–24 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
24+ kts
Storm conditions. Storm jib or bare poles. Seek shelter if coastal.
How It Compares
Side-by-side with the boats most often cross-shopped against the Dufour Classic 38.
|
Dufour Classic 38 |
Beneteau 37 |
Catalina 375 |
Contest 37 |
Hunter 37 Legend |
Moorings 372 |
| Dimensions |
| LOA |
37.6 |
37.7 |
38.5 |
37.7 |
37.5 |
37.7 |
| LWL |
32.5 |
34.1 |
34.4 |
31.1 |
31.3 |
34.1 |
| Beam |
12.3 |
12.8 |
13.0 |
12.0 |
12.8 |
12.8 |
| Displacement |
13 |
14 |
15,500 |
21 |
14 |
14 |
| Ballast |
4 |
4 |
5,200 |
6 |
6 |
4 |
| Sail Area |
847 |
620 |
646 |
840 |
704 |
621 |
| Performance |
| PHRF |
— |
— |
113 |
— |
108 |
— |
| SA/Disp |
24.0 |
17.1 |
16.6 |
17.7 |
18.6 |
17.2 |
| Bal/Disp |
34.2 |
30.4 |
33.6 |
30.4 |
40.3 |
30.4 |
| Comfort |
21.7 |
20.6 |
21.9 |
36.0 |
23.2 |
20.6 |
| Capsize |
2.07 |
2.13 |
2.09 |
1.74 |
2.09 |
2.13 |
| Hull Speed |
7.6 |
7.8 |
7.9 |
7.5 |
7.5 |
7.8 |