The First Class 10 Beneteau 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 30.1′, the First Class 10 Beneteau tops out around 7.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √30.1′ LWL = 7.3 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
34.1
Performance-oriented — carries a lot of canvas for its weight.
Ballast / Displacement
35.5%
Typical cruising ballast — balanced stability and motion underway.
Displacement / Length
113
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
12.4
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.22
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
SA/Disp (Calculated)
26.7
Computed from measured I/J/P/E rather than reported sail area.
Pounds/Inch Immersion
6lbs
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
12.4
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
2.22
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 First Class 10 Beneteau sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
J/105
90s/nm
Hunter 34
159s/nm
Irwin 34 Citation
168s/nm
Tartan 34 2
174s/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 |
6.9 |
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 (34.1), 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 First Class 10 Beneteau — 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 First Class 10 Beneteau.
|
First Class 10 Beneteau |
Hunter 34 |
Irwin 34 Citation |
J/105 |
Jeanneau 342 |
Tartan 34 2 |
| Dimensions |
| LOA |
34.3 |
34.4 |
34.3 |
34.5 |
34.5 |
34.4 |
| LWL |
30.1 |
28.3 |
27.3 |
30.0 |
29.5 |
28.8 |
| Beam |
9.7 |
11.6 |
11.3 |
11.0 |
11.8 |
11.0 |
| Displacement |
6 |
11 |
11 |
7 |
12 |
11 |
| Ballast |
2 |
5 |
4 |
3 |
4 |
4 |
| Sail Area |
663 |
567 |
538 |
600 |
570 |
538 |
| Performance |
| PHRF |
— |
159 |
168 |
90 |
— |
174 |
| SA/Disp |
34.1 |
17.5 |
17.0 |
24.1 |
16.8 |
17.5 |
| Bal/Disp |
35.5 |
42.3 |
35.7 |
44.9 |
35.1 |
40.0 |
| Comfort |
12.4 |
23.1 |
24.1 |
22.3 |
23.2 |
23.0 |
| Capsize |
2.22 |
2.04 |
2.00 |
1.66 |
2.04 |
1.97 |
| Hull Speed |
7.6 |
7.1 |
7.0 |
8.4 |
7.3 |
7.2 |