Impulse 21
4 / 10 - score 73%
The Impulse 21 is a 21.0ft fractional sloop designed by William Cook and built in fiberglass by Johnson Boat Works (USA) since 1986.
150 units have been built.
The Impulse 21 is an ultralight sailboat which is a very high performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a day-boat.
This boat has a reasonable score and ranks in the top half. It is a good choice.
Impulse 21 for sale elsewhere on the web:
Main features 88%
Model | Impulse 21 | ||
Length | 21 ft (83%) | the closest to 20.67 ft | |
Beam | 8 ft (93%) | the closest to 8.04 ft | |
Draft | 3.25 ft | ||
Country | United states (North America) | ||
Estimated price | $ 0 | ?? |
Ratios 60%
Sail area / displ. | 28 | ||
Ballast / displ. | 46.15 % | ||
Displ. / length | 91.66 | ||
Comfort ratio | 6.54 (60%) | the closest to 6.80 | |
Capsize | 2.93 |
Hull 55%
Hull type | Monohull fin keel with spade rudder | ||
Construction | Fiberglass | ||
Waterline length | 18.50 ft (55%) | the closest to 17.88 ft | |
Maximum draft | 3.25 ft | ||
Displacement | 1300 lbs | ||
Ballast | 600 lbs | ||
Hull speed | 5.76 knots |
Rigging
Rigging | Fractional Sloop | ||
Sail area (100%) | 208 sq.ft | ||
Air draft | 0 ft | ?? | |
Sail area fore | 80.85 sq.ft | ||
Sail area main | 126.10 sq.ft | ||
I | 23.10 ft | ||
J | 7 ft | ||
P | 26 ft | ||
E | 9.70 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 | Johnson Boat Works (USA) | ||
Designer | William Cook | ||
First built | 1986 | ||
Last built | 0 | ?? | |
Number built | 150 |