The Dehler 28 is well-powered with enough sail area to move in light air, 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 22.3′, the Dehler 28 tops out around 6.3 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √22.3′ LWL = 6.3 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
19.0
Powerful cruiser/racer — quick in light air, reef early when it pipes up.
Ballast / Displacement
40.0%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
222
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
18.5
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.08
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
733lbs
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
18.5
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
2.08
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 Dehler 28 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Banner 28
128s/nm
Precision 28
207s/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° |
2.7 |
3.4 |
3.8 |
3.9 |
| Close Reach60° |
3.2 |
4.1 |
4.5 |
4.7 |
| Beam Reach90° |
4.0 |
5.0 |
5.6 |
5.8 |
| Broad Reach120–135° |
3.7 |
4.6 |
5.2 |
5.4 |
| Run150–180° |
2.9 |
3.7 |
4.1 |
4.3 |
These are simplified estimates based on hull speed (6.3 kts),
SA/D (19.0), 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 Dehler 28 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–6 kts
6–20 kts
20–30 kts
30+ kts
Ghosting
0–6 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
6–20 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
20–30 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
30+ 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 Dehler 28.
|
Dehler 28 |
Banner 28 |
Ericson 28 2 |
Etap 28I |
Pogo 850 |
Precision 28 |
| Dimensions |
| LOA |
27.9 |
28.0 |
28.0 |
28.0 |
27.9 |
28.0 |
| LWL |
22.3 |
20.0 |
23.3 |
23.8 |
27.2 |
23.0 |
| Beam |
9.2 |
9.7 |
10.0 |
10.3 |
11.8 |
10.0 |
| Displacement |
5 |
2 |
7 |
6 |
6 |
5 |
| Ballast |
2 |
1 |
3 |
— |
1 |
1 |
| Sail Area |
369 |
374 |
411 |
358 |
560 |
— |
| Performance |
| PHRF |
— |
128 |
— |
— |
— |
207 |
| SA/Disp |
19.0 |
32.1 |
17.2 |
17.1 |
26.7 |
— |
| Bal/Disp |
40.0 |
51.8 |
— |
— |
30.4 |
34.6 |
| Comfort |
18.5 |
8.6 |
21.8 |
17.2 |
13.0 |
— |
| Capsize |
2.08 |
2.83 |
2.05 |
2.24 |
2.58 |
— |
| Hull Speed |
6.3 |
6.0 |
6.5 |
6.5 |
7.0 |
— |