Northern 25
Northern Yachts · designed by Philip Rhodes · 1970
fin keelBermuda rigCanada
The Northern 25 is a 25-foot bermuda rig sailboat designed by Philip Rhodes and built by Northern Yachts, first launched in 1970.
General
| Builder | Northern Yachts |
|---|---|
| Designer | Philip Rhodes |
| Years built | 1970 |
| Hull type | fin keel |
| Rig type | Bermuda rig |
| Construction | fiberglass |
| Origin | Canada |
Dimensions
| LOA | 25.25 ft7.70 m |
|---|---|
| LWL | 19.25 ft5.87 m |
| Beam | 8.17 ft2.49 m |
| Draft (max) | 4.00 ft1.22 m |
| Displacement | 5,100 lb2,313 kg |
| Ballast | 2,300 lb1,043 kg |
| Sail Area | 304 ft²28.2 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 16.42 Cruiser — good all-round performance
Ballast / Displacement 45.1 % Higher = stiffer / more sail-carrying power
Displacement / Length 319 Heavy — bluewater displacement
Comfort Ratio 22.8 Coastal cruiser
Capsize Screening 1.90 Suited to offshore passages (≤ 2.0)
Hull Speed 5.9 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
$16,500 typical range $13,000 – $20,000
⚠ 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.
