The Farr 40 One Design is aggressively canvassed for its weight, with a quick, snappy motion best suited to day sailing.
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 35.3′, the Farr 40 One Design tops out around 8.0 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √35.3′ 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
36.2
Performance-oriented — carries a lot of canvas for its weight.
Ballast / Displacement
45.5%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
111
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
14.7
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.39
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
SA/Disp (Calculated)
30.7
Computed from measured I/J/P/E rather than reported sail area.
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
14.7
Quick, snappy motion — better for day sails and racing than long passages.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
2.39
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 Farr 40 One Design sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Schock 41
65s/nm
Dehler 41 Ds
84s/nm
Swan 411
87s/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 |
5.3 |
5.5 |
| Close Reach60° |
4.5 |
5.7 |
6.4 |
6.7 |
| Beam Reach90° |
5.6 |
7.0 |
7.9 |
8.5 |
| Broad Reach120–135° |
5.1 |
6.5 |
7.3 |
7.9 |
| Run150–180° |
4.1 |
5.2 |
5.8 |
6.1 |
These are simplified estimates based on hull speed (8.0 kts),
SA/D (36.2), 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 Farr 40 One Design — 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 Farr 40 One Design.
|
Farr 40 One Design |
Dehler 41 Cr |
Dehler 41 Ds |
Schock 41 |
Solaris 42 |
Swan 411 |
| Dimensions |
| LOA |
40.7 |
40.9 |
40.9 |
40.8 |
40.6 |
40.8 |
| LWL |
35.3 |
36.3 |
36.3 |
32.2 |
37.6 |
33.6 |
| Beam |
13.2 |
12.8 |
12.8 |
12.9 |
13.1 |
11.9 |
| Displacement |
10 |
19 |
19 |
15 |
19 |
23 |
| Ballast |
4 |
7 |
7 |
7 |
6 |
9 |
| Sail Area |
1 |
876 |
876 |
802 |
1 |
873 |
| Performance |
| PHRF |
— |
— |
84 |
65 |
— |
87 |
| SA/Disp |
36.2 |
19.3 |
19.3 |
20.5 |
22.7 |
17.0 |
| Bal/Disp |
45.5 |
37.1 |
37.1 |
47.5 |
— |
40.8 |
| Comfort |
14.7 |
27.0 |
27.0 |
23.3 |
25.4 |
37.9 |
| Capsize |
2.39 |
1.90 |
1.90 |
2.06 |
1.95 |
1.66 |
| Hull Speed |
8.0 |
8.1 |
8.1 |
7.6 |
8.2 |
7.8 |