The Sun Odyssey 380 Jeanneau is moderately powered for comfortable coastal cruising, 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 35.1′, the Sun Odyssey 380 Jeanneau tops out around 7.9 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √35.1′ LWL = 7.9 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
17.9
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
29.1%
Light ballast — tends to be tender; reef earlier than the numbers suggest.
Displacement / Length
156
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
23.2
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
2.00
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
SA/Disp (Calculated)
16.7
Computed from measured I/J/P/E rather than reported sail area.
Pounds/Inch Immersion
1lbs
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
23.2
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
2.00
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 Sun Odyssey 380 Jeanneau sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
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° |
3.2 |
4.1 |
4.6 |
4.8 |
| Close Reach60° |
3.9 |
5.0 |
5.5 |
5.8 |
| Beam Reach90° |
4.8 |
6.1 |
6.8 |
7.4 |
| Broad Reach120–135° |
4.4 |
5.6 |
6.3 |
6.8 |
| Run150–180° |
3.6 |
4.5 |
5.0 |
5.2 |
These are simplified estimates based on hull speed (7.9 kts),
SA/D (17.9), 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 Sun Odyssey 380 Jeanneau — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–7 kts
7–18 kts
18–26 kts
26+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–18 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
18–26 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
26+ 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 Sun Odyssey 380 Jeanneau.
|
Sun Odyssey 380 Jeanneau |
Etap 37S |
Najad 361 |
Scanner 361 |
Swan 36 2 |
X 372 |
| Dimensions |
| LOA |
36.8 |
36.9 |
36.7 |
37.0 |
36.6 |
37.0 |
| LWL |
35.1 |
32.5 |
30.4 |
31.5 |
29.7 |
29.5 |
| Beam |
12.3 |
12.6 |
11.5 |
11.1 |
12.0 |
11.7 |
| Displacement |
15 |
13 |
16 |
12 |
14 |
11 |
| Ballast |
4 |
4 |
7 |
4 |
5 |
4 |
| Sail Area |
682 |
825 |
— |
667 |
624 |
593 |
| Performance |
| PHRF |
— |
— |
— |
— |
— |
95 |
| SA/Disp |
17.9 |
22.8 |
— |
20.1 |
16.7 |
19.0 |
| Bal/Disp |
29.1 |
31.5 |
42.7 |
37.5 |
37.9 |
43.1 |
| Comfort |
23.2 |
21.8 |
— |
23.4 |
26.3 |
20.6 |
| Capsize |
2.00 |
2.10 |
— |
1.92 |
1.96 |
2.10 |
| Hull Speed |
7.9 |
7.6 |
— |
7.5 |
7.3 |
7.3 |