The Atlante is modestly canvassed and unhurried, 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 21.0′, the Atlante tops out around 6.1 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √21.0′ LWL = 6.1 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
13.7
Modestly canvassed — a comfortable, unhurried cruiser.
Displacement / Length
255
Moderate-heavy — carries provisions well, deliberate in light air.
Comfort Ratio
21.9
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
1.86
Below the 2.0 offshore threshold — acceptable for ocean passages.
Pounds/Inch Immersion
608lbs
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
21.9
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
1.86
Below the 2.0 offshore threshold — acceptable for ocean passages.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
PHRF Fleet Position
Where the Atlante sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser/Racer 90–150
Cruiser 150–210
Heavy Cruiser 210–300
Contessa 28
171s/nm
Newport 28
192s/nm
Morgan 28
207s/nm
Yankee 28
222s/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° |
2.2 |
2.8 |
3.1 |
3.3 |
| Close Reach60° |
2.7 |
3.4 |
3.8 |
3.9 |
| Beam Reach90° |
3.3 |
4.2 |
4.6 |
4.8 |
| Broad Reach120–135° |
3.0 |
3.8 |
4.3 |
4.5 |
| Run150–180° |
2.4 |
3.1 |
3.4 |
3.6 |
These are simplified estimates based on hull speed (6.1 kts),
SA/D (13.7), 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 Atlante — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–8 kts
8–22 kts
22–30 kts
30+ kts
Ghosting
0–8 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
8–22 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
22–30 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 Atlante.
|
Atlante |
Cc 27 Mk Iii |
Contessa 28 |
Morgan 28 |
Newport 28 |
Yankee 28 |
| Dimensions |
| LOA |
27.8 |
27.9 |
27.7 |
27.8 |
27.7 |
27.8 |
| LWL |
21.0 |
22.9 |
22.0 |
23.8 |
25.0 |
21.9 |
| Beam |
8.1 |
9.2 |
9.4 |
9.0 |
9.5 |
8.5 |
| Displacement |
5 |
5 |
6 |
7 |
7 |
6 |
| Ballast |
— |
2 |
2 |
3 |
3 |
2 |
| Sail Area |
260 |
344 |
338 |
401 |
— |
366 |
| Performance |
| PHRF |
— |
— |
171 |
207 |
192 |
222 |
| SA/Disp |
13.7 |
17.7 |
14.9 |
16.7 |
— |
16.9 |
| Bal/Disp |
— |
38.5 |
40.2 |
— |
45.7 |
— |
| Comfort |
21.9 |
18.3 |
22.9 |
25.2 |
— |
24.6 |
| Capsize |
1.86 |
2.08 |
1.98 |
1.83 |
— |
1.82 |
| Hull Speed |
6.1 |
6.4 |
6.3 |
6.5 |
— |
6.3 |