The Sun Fast 41 Jeanneau 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 35.8′, the Sun Fast 41 Jeanneau tops out around 8.0 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √35.8′ LWL = 8.0 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
22.8
Performance-oriented — carries a lot of canvas for its weight.
Ballast / Displacement
40.0%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
161
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
21.2
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
2.12
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
10lbs
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
21.2
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
2.12
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 Sun Fast 41 Jeanneau sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Catalina 400 Mk Ii
107s/nm
Bavaria 41
108s/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° |
3.7 |
4.7 |
5.2 |
5.5 |
| Close Reach60° |
4.5 |
5.7 |
6.3 |
6.6 |
| Beam Reach90° |
5.5 |
7.0 |
7.8 |
8.4 |
| Broad Reach120–135° |
5.1 |
6.4 |
7.2 |
7.8 |
| Run150–180° |
4.1 |
5.1 |
5.8 |
6.0 |
These are simplified estimates based on hull speed (8.0 kts),
SA/D (22.8), 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 Sun Fast 41 Jeanneau — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–5 kts
5–18 kts
18–28 kts
28+ kts
Ghosting
0–5 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
5–18 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
18–28 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
28+ 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 Sun Fast 41 Jeanneau.
|
Sun Fast 41 Jeanneau |
Bavaria 41 |
Catalina 400 Mk Ii |
Comet 41 S |
Dufour 41 2 |
Oceanis 41 Beneteau |
| Dimensions |
| LOA |
41.7 |
41.7 |
41.5 |
41.8 |
41.8 |
41.7 |
| LWL |
35.8 |
36.1 |
36.5 |
35.8 |
36.8 |
35.8 |
| Beam |
13.5 |
13.8 |
13.5 |
12.9 |
14.1 |
13.8 |
| Displacement |
16 |
20 |
19 |
17 |
21 |
20 |
| Ballast |
6 |
7 |
7 |
5 |
5 |
7 |
| Sail Area |
925 |
807 |
808 |
897 |
9 |
807 |
| Performance |
| PHRF |
— |
108 |
107 |
— |
— |
— |
| SA/Disp |
22.8 |
17.2 |
17.8 |
21.3 |
201.8 |
17.2 |
| Bal/Disp |
40.0 |
35.5 |
36.6 |
31.3 |
26.9 |
35.5 |
| Comfort |
21.2 |
23.6 |
25.0 |
24.2 |
25.4 |
25.5 |
| Capsize |
2.12 |
2.02 |
2.00 |
1.98 |
2.04 |
2.02 |
| Hull Speed |
8.0 |
8.0 |
8.1 |
8.0 |
8.1 |
8.0 |