Sigma 18
8 / 17 - score 60%
The Sigma 18 is a 17.5ft fractional sloop designed by Brian Amato and built in fiberglass between 1979 and 1980.
The Sigma 18 is a light sailboat which is a high performer. It is stable / stiff and has a low righting capability if capsized. It is best suited as a racing boat.
This boat has a reasonable score and ranks in the top half. It is a good choice.
Sigma 18 for sale elsewhere on the web:
Main features 64%
| Model | Sigma 18 | ||
| Length | 17.50 ft (57%) | the closest to 18.25 ft | |
| Beam | 6.33 ft (72%) | the closest to 6.17 ft | |
| Draft | 2 ft | ||
| Country | ?? | ||
| Estimated price | $ 0 | ?? |
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Ratios 25%
| Sail area / displ. | 21.06 | ||
| Ballast / displ. | 36.89 % | ||
| Displ. / length | 153.57 | ||
| Comfort ratio | 10.13 (25%) | the closest to 10.89 | |
| Capsize | 2.37 |
Hull 83%
| Hull type | Monohull fin keel with transom hung rudder | ||
| Construction | Fiberglass | ||
| Waterline length | 15.25 ft (83%) | the closest to 15.50 ft | |
| Maximum draft | 2 ft | ||
| Displacement | 1220 lbs | ||
| Ballast | 450 lbs | ||
| Hull speed | 5.23 knots |
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Rigging
| Rigging | Fractional Sloop | ||
| Sail area (100%) | 150 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 0 sq.ft | ?? | |
| Sail area main | 0 sq.ft | ?? | |
| I | 0 ft | ?? | |
| J | 0 ft | ?? | |
| P | 0 ft | ?? | |
| E | 0 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 | ?? | ||
| Designer | Brian Amato | ||
| First built | 1979 | ||
| Last built | 1980 | ||
| Number built | 0 | ?? |