The Swan 431 is a 43.25ft masthead sloop designed by Sparkman & Stephens and built in fiberglass by Nautor (Swan sailboats) between 1976 and 1978.
32 units have been built.
The Swan 431 is a heavy sailboat which is a reasonably good performer. It is very stable / stiff and has a good righting capability if capsized. It is best suited as a bluewater cruising boat. The fuel capacity is originally small. There is a good water supply range.
Main features
| Model | Swan 431 | ||
| Length | 43.25 ft | ||
| Beam | 13.41 ft | ||
| Draft | 7.40 ft | ||
| Country | Finland (Europe) | ||
| Estimated price | $ 0 | ?? |
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Ratios
| Sail area / displ. | 16.19 | ||
| Ballast / displ. | 44.91 % | ||
| Displ. / length | 319.52 | ||
| Comfort ratio | 35.55 | ||
| Capsize | 1.80 |
Hull
| Hull type | Monohull fin keel with rudder on skeg | ||
| Construction | Fiberglass | ||
| Waterline length | 33.33 ft | ||
| Maximum draft | 7.40 ft | ||
| Displacement | 26500 lbs | ||
| Ballast | 11900 lbs | ||
| Hull speed | 7.74 knots |
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Rigging
| Rigging | Masthead Sloop | ||
| Sail area (100%) | 896 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 529.53 sq.ft | ||
| Sail area main | 366.09 sq.ft | ||
| I | 59 ft | ||
| J | 17.95 ft | ||
| P | 53.25 ft | ||
| E | 13.75 ft |
Engine
| Nb engines | 1 | ||
| Total power | 37 HP | ||
| Fuel capacity | 40 gals |
Accommodations
| Water capacity | 100 gals | ||
| Headroom | 0 ft | ||
| Nb of cabins | 0 | ||
| Nb of berths | 0 | ||
| Nb heads | 0 |
Builder data
| Builder | Nautor (Swan sailboats) | ||
| Designer | Sparkman & Stephens | ||
| First built | 1976 | ||
| Last built | 1978 | ||
| Number built | 32 |
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