The Dean 440 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 43.0′, the Dean 440 tops out around 8.8 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √43.0′ LWL = 8.8 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
29.0
Performance-oriented — carries a lot of canvas for its weight.
Displacement / Length
124
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
11.5
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
3.40
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
22lbs
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
11.5
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
3.40
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 Dean 440 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
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° |
4.1 |
5.2 |
5.8 |
6.1 |
| Close Reach60° |
5.0 |
6.3 |
7.1 |
7.4 |
| Beam Reach90° |
6.1 |
7.8 |
8.7 |
9.4 |
| Broad Reach120–135° |
5.7 |
7.2 |
8.0 |
8.7 |
| Run150–180° |
4.5 |
5.7 |
6.4 |
6.7 |
These are simplified estimates based on hull speed (8.8 kts),
SA/D (29.0), 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 Dean 440 — 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 Dean 440.
|
Dean 440 |
Dean 441 |
Fp 44 |
Hanse 430 |
Ocean 43 Westerly |
Oceanis 430 Beneteau |
| Dimensions |
| LOA |
43.6 |
43.6 |
43.5 |
43.6 |
43.5 |
43.6 |
| LWL |
43.0 |
43.0 |
— |
39.4 |
35.9 |
37.4 |
| Beam |
23.8 |
23.6 |
24.4 |
13.7 |
13.8 |
14.1 |
| Displacement |
22 |
24 |
33 |
24 |
29 |
22 |
| Ballast |
— |
— |
— |
7 |
12 |
8 |
| Sail Area |
1,420 |
1 |
1,323 |
1 |
— |
861 |
| Performance |
| PHRF |
— |
— |
— |
71 |
— |
— |
| SA/Disp |
29.0 |
25.8 |
20.5 |
19.7 |
— |
17.0 |
| Bal/Disp |
— |
— |
— |
29.4 |
40.7 |
35.6 |
| Comfort |
11.5 |
— |
18.7 |
28.0 |
— |
26.4 |
| Capsize |
3.40 |
— |
3.03 |
1.90 |
— |
1.99 |
| Hull Speed |
8.8 |
— |
8.2 |
8.4 |
— |
8.2 |