The Diva 39 is well-powered with enough sail area to move in light air, with acceptable motion comfort for coastal passages, and respectable in club racing.
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 30.8′, the Diva 39 tops out around 7.4 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √30.8′ LWL = 7.4 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
PHRF Rating
105s/nm
Cruiser/racer — competitive in club racing, comfortable cruising.
SA / Displacement
21.0
Powerful cruiser/racer — quick in light air, reef early when it pipes up.
Comfort Ratio
22.1
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
1.83
Below the 2.0 offshore threshold — acceptable for ocean passages.
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
22.1
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
1.83
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 Diva 39 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Dehler 38
93s/nm
Baltic 39
102s/nm
Diva 39
105s/nm
Cruiser/racer — competitive in club racing, comfortable cruising.
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° |
3.3 |
4.2 |
4.7 |
4.9 |
| Close Reach60° |
4.0 |
5.1 |
5.6 |
5.9 |
| Beam Reach90° |
4.9 |
6.2 |
6.9 |
7.2 |
| Broad Reach120–135° |
4.5 |
5.7 |
6.4 |
6.7 |
| Run150–180° |
3.6 |
4.6 |
5.1 |
5.3 |
These are simplified estimates based on hull speed (7.4 kts),
SA/D (21.0), 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 Diva 39 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–6 kts
6–18 kts
18–26 kts
26+ kts
Ghosting
0–6 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
6–18 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 Diva 39.
|
Diva 39 |
Baltic 39 |
Cr 390 |
Dehler 38 |
Sabre 38 Mkii |
Sweden Yachts 38 |
| Dimensions |
| LOA |
38.7 |
38.8 |
38.7 |
38.7 |
38.7 |
38.7 |
| LWL |
30.8 |
32.7 |
35.4 |
31.5 |
31.4 |
31.2 |
| Beam |
9.8 |
12.6 |
11.7 |
12.5 |
12.3 |
12.7 |
| Displacement |
9 |
18 |
15 |
12 |
16 |
16 |
| Ballast |
4 |
7 |
7 |
2 |
6 |
— |
| Sail Area |
605 |
732 |
— |
627 |
691 |
741 |
| Performance |
| PHRF |
105 |
102 |
— |
93 |
— |
— |
| SA/Disp |
21.0 |
17.1 |
— |
19.1 |
16.9 |
18.5 |
| Bal/Disp |
— |
43.3 |
45.8 |
23.1 |
39.1 |
— |
| Comfort |
22.1 |
27.7 |
— |
19.4 |
27.4 |
25.7 |
| Capsize |
1.83 |
1.92 |
— |
2.17 |
1.93 |
2.00 |
| Hull Speed |
7.4 |
7.7 |
— |
7.5 |
7.5 |
7.5 |