Sigma 18


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.

Sigma 18 for sale elsewhere on the web:

Main features


Model Sigma 18
Length 17.50 ft
Beam 6.33 ft
Draft 2 ft
Country ??
Estimated price $ 0 ??

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Ratios


Sail area / displ. 21.06
Ballast / displ. 36.89 %
Displ. / length 153.57
Comfort ratio 10.13
Capsize 2.37

Hull


Hull type Monohull fin keel with transom hung rudder
Construction Fiberglass
Waterline length 15.25 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 ??