The Cr 380 Ds is well-powered with enough sail area to move in light air, 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 32.0′, the Cr 380 Ds tops out around 7.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √32.0′ 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
20.4
Powerful cruiser/racer — quick in light air, reef early when it pipes up.
Ballast / Displacement
40.3%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
231
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
28.7
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
1.86
Below the 2.0 offshore threshold — acceptable for ocean passages.
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
28.7
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
1.86
Below the 2.0 offshore threshold — acceptable for ocean passages.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
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° |
3.3 |
4.2 |
4.7 |
4.9 |
| Close Reach60° |
4.0 |
5.1 |
5.7 |
5.9 |
| Beam Reach90° |
4.9 |
6.2 |
6.9 |
7.2 |
| Broad Reach120–135° |
4.5 |
5.7 |
6.4 |
6.7 |
| Run150–180° |
3.6 |
4.6 |
5.1 |
5.3 |
These are simplified estimates based on hull speed (7.6 kts),
SA/D (20.4), 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 Cr 380 Ds — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–6 kts
6–20 kts
20–30 kts
30+ kts
Ghosting
0–6 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
6–20 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
20–30 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
30+ 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 Cr 380 Ds.
|
Cr 380 Ds |
Beneteau 37 |
Cc 115 |
Contest 37 |
Malo 37 |
Opium 39 |
| Dimensions |
| LOA |
37.7 |
37.7 |
37.8 |
37.7 |
37.8 |
37.6 |
| LWL |
32.0 |
34.1 |
33.0 |
31.1 |
31.9 |
36.2 |
| Beam |
11.9 |
12.8 |
11.9 |
12.0 |
11.8 |
13.7 |
| Displacement |
16 |
14 |
11 |
21 |
17 |
12 |
| Ballast |
6 |
4 |
4 |
6 |
5 |
— |
| Sail Area |
839 |
620 |
781 |
840 |
673 |
— |
| Performance |
| SA/Disp |
20.4 |
17.1 |
24.2 |
17.7 |
15.8 |
— |
| Bal/Disp |
40.3 |
30.4 |
35.6 |
30.4 |
33.3 |
— |
| Comfort |
28.7 |
20.6 |
19.5 |
36.0 |
30.5 |
— |
| Capsize |
1.86 |
2.13 |
2.10 |
1.74 |
1.81 |
— |
| Hull Speed |
7.6 |
7.8 |
7.7 |
7.5 |
7.6 |
— |