Shipman 28
Albin Marin · designed by Olle Enderlein · 1969
keelboatBermuda rigSweden
The Shipman 28 is a 29-foot bermuda rig sailboat designed by Olle Enderlein and built by Albin Marin, first launched in 1969.
General
| Builder | Albin Marin |
|---|---|
| Designer | Olle Enderlein |
| Years built | 1969 |
| Hull type | keelboat |
| Rig type | Bermuda rig |
| Construction | fiberglass |
| Origin | Sweden |
Dimensions
| LOA | 29.07 ft8.86 m |
|---|---|
| LWL | 21.00 ft6.40 m |
| Beam | 8.53 ft2.60 m |
| Draft (max) | 5.09 ft1.55 m |
| Displacement | 6,173 lb2,800 kg |
| Ballast | 2,667 lb1,210 kg |
| Sail Area | 307 ft²28.5 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 14.60 Under-canvassed — heavy-air / motorsailing
Ballast / Displacement 43.2 % Higher = stiffer / more sail-carrying power
Displacement / Length 298 Moderate
Comfort Ratio 23.4 Coastal cruiser
Capsize Screening 1.86 Suited to offshore passages (≤ 2.0)
Hull Speed 6.1 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.
Average used price
€5,100 typical asking price, used market
Average second-hand price reported by goodboats.ru. Actual prices vary with condition, equipment and location.
Data sources: Wikidata (CC0) · Wikipedia (CC-BY-SA) · price via goodboats.ru
