The Deltania 20 2 is moderately powered for comfortable coastal cruising, 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.
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
17.5
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
20.0%
Light ballast — tends to be tender; reef earlier than the numbers suggest.
Displacement / Length
163
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
10.3
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.55
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
3lbs
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
10.3
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
2.55
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 Deltania 20 2 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser/Racer 90–150
Cruiser 150–210
Heavy Cruiser 210–300
Ultimate 20
144s/nm
Precision 21
243s/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° |
2.3 |
2.9 |
3.2 |
3.3 |
| Close Reach60° |
2.7 |
3.5 |
3.9 |
4.0 |
| Beam Reach90° |
3.4 |
4.3 |
4.8 |
5.2 |
| Broad Reach120–135° |
3.1 |
3.9 |
4.4 |
4.8 |
| Run150–180° |
2.5 |
3.1 |
3.5 |
3.7 |
These are simplified estimates based on hull speed (5.6 kts),
SA/D (17.5), 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 Deltania 20 2 — 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 Deltania 20 2.
|
Deltania 20 2 |
First 211 Beneteau |
Independence 20 |
Nimble 20 |
Precision 21 |
Ultimate 20 |
| Dimensions |
| LOA |
20.7 |
20.5 |
20.5 |
20.9 |
20.8 |
20.8 |
| LWL |
— |
19.7 |
17.8 |
19.8 |
17.5 |
18.0 |
| Beam |
8.0 |
8.1 |
8.0 |
7.8 |
8.3 |
8.0 |
| Displacement |
1 |
2 |
2 |
1 |
1 |
1 |
| Ballast |
396 |
772 |
900 |
400 |
600 |
450 |
| Sail Area |
172 |
271 |
230 |
207 |
203 |
243 |
| Performance |
| PHRF |
— |
— |
— |
— |
243 |
144 |
| SA/Disp |
17.5 |
22.2 |
22.6 |
22.0 |
21.4 |
36.6 |
| Bal/Disp |
20.0 |
28.1 |
43.3 |
21.6 |
32.0 |
— |
| Comfort |
10.3 |
13.0 |
10.8 |
9.3 |
9.4 |
5.7 |
| Capsize |
2.55 |
2.33 |
2.51 |
2.53 |
2.68 |
3.10 |
| Hull Speed |
5.6 |
5.9 |
5.7 |
6.0 |
5.6 |
5.7 |