The Dynamique 80 is aggressively canvassed for its weight, with a steady, comfortable ride offshore.
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 63.0′, the Dynamique 80 tops out around 10.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √63.0′ LWL = 10.6 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
34.9
Performance-oriented — carries a lot of canvas for its weight.
Displacement / Length
136
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
36.1
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.73
Below the 2.0 offshore threshold — acceptable for ocean passages.
SA/Disp (Calculated)
21.1
Computed from measured I/J/P/E rather than reported sail area.
Pounds/Inch Immersion
4lbs
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
36.1
Good offshore comfort — steady enough for multi-day passages.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
1.73
Below the 2.0 offshore threshold — acceptable for ocean passages.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
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° |
5.0 |
6.3 |
7.1 |
7.4 |
| Close Reach60° |
6.1 |
7.7 |
8.6 |
8.9 |
| Beam Reach90° |
7.4 |
9.4 |
10.5 |
11.4 |
| Broad Reach120–135° |
6.9 |
8.7 |
9.7 |
10.5 |
| Run150–180° |
5.5 |
6.9 |
7.8 |
8.1 |
These are simplified estimates based on hull speed (10.6 kts),
SA/D (34.9), 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 Dynamique 80 — 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 Dynamique 80.
|
Dynamique 80 |
Baltic 73 |
Grand Mistral 80 |
Oyster 745 |
Swan 77 |
Swan 80 2 S |
| Dimensions |
| LOA |
80.0 |
73.2 |
80.4 |
74.6 |
78.8 |
82.3 |
| LWL |
63.0 |
60.7 |
70.8 |
65.7 |
60.3 |
72.8 |
| Beam |
18.3 |
18.0 |
20.3 |
19.4 |
19.7 |
20.0 |
| Displacement |
76 |
77 |
54 |
118 |
112 |
79 |
| Ballast |
— |
29 |
26 |
— |
39 |
39 |
| Sail Area |
3 |
2 |
— |
3 |
— |
3 |
| Performance |
| SA/Disp |
34.9 |
22.0 |
— |
19.9 |
— |
28.9 |
| Bal/Disp |
— |
38.6 |
49.4 |
— |
35.3 |
— |
| Comfort |
36.1 |
39.3 |
— |
51.9 |
— |
30.1 |
| Capsize |
1.73 |
1.70 |
— |
1.58 |
— |
1.86 |
| Hull Speed |
10.6 |
10.4 |
— |
10.9 |
— |
11.4 |