The Seawanhaka one design ss is a 31.0ft fractional sloop designed by Sparkman & Stephens and built in wood by Nevins Inc. since 1939.
The Seawanhaka one design ss is a heavy sailboat which is slightly under powered. It is very stable / stiff and has an excellent righting capability if capsized. It is best suited as a bluewater cruising boat.
Main features
| Model | Seawanhaka one design ss | ||
| Length | 31 ft | ||
| Beam | 6.58 ft | ||
| Draft | 4.50 ft | ||
| Country | United states (North America) | ||
| Estimated price | $ 0 | ?? |
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Ratios
| Sail area / displ. | 15.66 | ||
| Ballast / displ. | 40.71 % | ||
| Displ. / length | 337.44 | ||
| Comfort ratio | 36.62 | ||
| Capsize | 1.38 |
Hull
| Hull type | Monohull fin keel | ||
| Construction | Wood | ||
| Waterline length | 21 ft | ||
| Maximum draft | 4.50 ft | ||
| Displacement | 7000 lbs | ||
| Ballast | 2850 lbs | ||
| Hull speed | 6.14 knots |
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Rigging
| Rigging | Fractional Sloop | ||
| Sail area (100%) | 357 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 133 sq.ft | ||
| Sail area main | 245.05 sq.ft | ||
| I | 28 ft | ||
| J | 9.50 ft | ||
| P | 33.80 ft | ||
| E | 14.50 ft |
Engine
| Nb engines | 1 | ||
| Total power | 0 HP | ||
| Fuel capacity | 0 gals |
Accommodations
| Water capacity | 0 gals | ||
| Headroom | 0 ft | ||
| Nb of cabins | 0 | ||
| Nb of berths | 0 | ||
| Nb heads | 0 |
Builder data
| Builder | Nevins Inc. | ||
| Designer | Sparkman & Stephens | ||
| First built | 1939 | ||
| Last built | 0 | ?? | |
| Number built | 0 | ?? |
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