Niagara 31
Hinterhoeller Yachts · designed by Germán Frers · 1977
fin keelBermuda rigCanada
The Niagara 31 is a 31-foot bermuda rig sailboat designed by Germán Frers and built by Hinterhoeller Yachts, first launched in 1977.
General
| Builder | Hinterhoeller Yachts |
|---|---|
| Designer | Germán Frers |
| Years built | 1977 |
| Hull type | fin keel |
| Rig type | Bermuda rig |
| Construction | fiberglass |
| Origin | Canada |
Dimensions
| LOA | 31.25 ft9.53 m |
|---|---|
| LWL | 24.25 ft7.39 m |
| Beam | 10.25 ft3.12 m |
| Draft (max) | 5.00 ft1.52 m |
| Displacement | 8,000 lb3,629 kg |
| Ballast | 3,550 lb1,610 kg |
| Sail Area | 492 ft²45.7 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 19.68 Cruiser — good all-round performance
Ballast / Displacement 44.4 % Higher = stiffer / more sail-carrying power
Displacement / Length 250 Moderate
Comfort Ratio 21.1 Coastal cruiser
Capsize Screening 2.05 Better suited to coastal use (> 2.0)
Hull Speed 6.6 kn Theoretical max displacement speed
How these numbers are calculated
- SA / Displacement
SA ÷ (Disp ÷ 64)^(2/3)— Power-to-weight. < 16 under-canvassed, 16–20 cruiser, > 20 racer.- Ballast / Displacement
Ballast ÷ Disp × 100— Stability/stiffness. Higher carries sail better.- Displacement / Length
Disp(lt) ÷ (0.01 · LWL)³— < 100 ultralight, 100–200 light, 200–300 moderate, > 300 heavy.- Comfort Ratio (Brewer)
Disp ÷ (0.65 · (0.7·LWL + 0.3·LOA) · Beam^1.33)— Motion in a seaway. Higher = more comfortable offshore.- Capsize Screening
Beam ÷ (Disp ÷ 64)^(1/3)— ≤ 2.0 favored for offshore; > 2.0 better for coastal use.- Hull Speed
1.34 · √LWL— Theoretical max displacement speed in knots.
Estimated price
$27,000 typical range $21,500 – $32,500
⚠ Rough estimate only — not market data. Derived from a simple model based on length and hull age; actual asking prices vary widely with condition, equipment, engine hours and location.
