The Sq 25 is aggressively canvassed for its weight, 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.
With a waterline of 22.1′, the Sq 25 tops out around 6.3 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √22.1′ LWL = 6.3 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
26.1
Performance-oriented — carries a lot of canvas for its weight.
Displacement / Length
146
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
14.5
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.15
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
SA/Disp (Calculated)
22.9
Computed from measured I/J/P/E rather than reported sail area.
Pounds/Inch Immersion
645lbs
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
14.5
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
2.15
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 Sq 25 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Beneteau 25 Platu
120s/nm
Capri 25 Catalina
174s/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° |
3.0 |
3.7 |
4.2 |
4.4 |
| Close Reach60° |
3.6 |
4.5 |
5.1 |
5.3 |
| Beam Reach90° |
4.4 |
5.6 |
6.2 |
6.7 |
| Broad Reach120–135° |
4.1 |
5.1 |
5.7 |
6.2 |
| Run150–180° |
3.3 |
4.1 |
4.6 |
4.8 |
These are simplified estimates based on hull speed (6.3 kts),
SA/D (26.1), 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 Sq 25 — 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 Sq 25.
|
Sq 25 |
Beneteau 25 Platu |
Brenta 24 |
Capri 25 Catalina |
Platu 25 |
Tide 25 |
| Dimensions |
| LOA |
24.6 |
24.6 |
24.6 |
24.6 |
24.7 |
24.6 |
| LWL |
22.1 |
22.2 |
24.6 |
19.2 |
22.2 |
22.1 |
| Beam |
8.2 |
8.5 |
7.8 |
9.2 |
8.6 |
8.2 |
| Displacement |
3 |
2 |
2 |
2 |
2 |
4 |
| Ballast |
— |
1 |
904 |
900 |
1 |
— |
| Sail Area |
376 |
312 |
305 |
276 |
312 |
376 |
| Performance |
| PHRF |
— |
120 |
— |
174 |
— |
— |
| SA/Disp |
26.1 |
25.5 |
27.1 |
21.5 |
25.9 |
23.7 |
| Bal/Disp |
— |
40.8 |
37.3 |
30.5 |
41.8 |
— |
| Comfort |
14.5 |
10.8 |
9.9 |
11.5 |
10.3 |
16.8 |
| Capsize |
2.15 |
2.43 |
2.33 |
2.56 |
2.48 |
2.05 |
| Hull Speed |
6.3 |
6.3 |
6.6 |
5.9 |
6.3 |
6.3 |