The Alc 40 Le Comte is moderately powered for comfortable coastal cruising, 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 30.2′, the Alc 40 Le Comte tops out around 7.4 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √30.2′ LWL = 7.4 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
15.5
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
45.5%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
250
Moderate-heavy — carries provisions well, deliberate in light air.
Comfort Ratio
27.4
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
1.88
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
27.4
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
1.88
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 Alc 40 Le Comte sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Cal 40
120s/nm
Swan 40 Ss
126s/nm
Carter 40
135s/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° |
2.8 |
3.5 |
4.0 |
4.1 |
| Close Reach60° |
3.4 |
4.3 |
4.8 |
5.0 |
| Beam Reach90° |
4.2 |
5.3 |
5.9 |
6.1 |
| Broad Reach120–135° |
3.8 |
4.9 |
5.4 |
5.7 |
| Run150–180° |
3.1 |
3.9 |
4.3 |
4.5 |
These are simplified estimates based on hull speed (7.4 kts),
SA/D (15.5), 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 Alc 40 Le Comte — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–7 kts
7–22 kts
22–32 kts
32+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–22 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
22–32 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
32+ 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 Alc 40 Le Comte.
|
Alc 40 Le Comte |
Cal 40 |
Carter 40 |
Cc 40 1 |
Pj 40 Ss |
Swan 40 Ss |
| Dimensions |
| LOA |
39.5 |
39.3 |
39.5 |
39.6 |
39.3 |
39.3 |
| LWL |
30.2 |
30.3 |
30.4 |
28.7 |
28.5 |
28.5 |
| Beam |
11.7 |
11.0 |
11.3 |
11.8 |
10.8 |
10.8 |
| Displacement |
15 |
15 |
16 |
18 |
19 |
19 |
| Ballast |
7 |
6 |
5 |
7 |
7 |
7 |
| Sail Area |
597 |
700 |
570 |
756 |
— |
709 |
| Performance |
| PHRF |
— |
120 |
135 |
— |
— |
126 |
| SA/Disp |
15.5 |
18.5 |
14.1 |
17.2 |
— |
16.0 |
| Bal/Disp |
45.5 |
40.0 |
36.0 |
42.1 |
41.6 |
41.6 |
| Comfort |
27.4 |
28.8 |
30.7 |
34.1 |
— |
38.7 |
| Capsize |
1.88 |
1.79 |
1.77 |
1.77 |
— |
1.63 |
| Hull Speed |
7.4 |
7.4 |
7.4 |
7.2 |
— |
7.2 |