The Irwin 28 mk iv is a 28.42ft masthead sloop designed by Ted Irwin and built in fiberglass by Irwin Yachts between 1976 and 1981.
The Irwin 28 mk iv is a moderate weight sailboat which is slightly under powered. It is very stable / stiff and has a good righting capability if capsized. It is best suited as a coastal cruiser.
Main features
| Model | Irwin 28 mk iv | ||
| Length | 28.42 ft | ||
| Beam | 9 ft | ||
| Draft | 4.50 ft | ||
| Country | United states (North America) | ||
| Estimated price | $ 0 | ?? |
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Ratios
| Sail area / displ. | 15.39 | ||
| Ballast / displ. | 41.03 % | ||
| Displ. / length | 286.20 | ||
| Comfort ratio | 26.22 | ||
| Capsize | 1.82 |
Hull
| Hull type | Monohull fin keel with rudder on skeg | ||
| Construction | Fiberglass | ||
| Waterline length | 23 ft | ||
| Maximum draft | 4.50 ft | ||
| Displacement | 7800 lbs | ||
| Ballast | 3200 lbs | ||
| Hull speed | 6.43 knots |
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Rigging
| Rigging | Masthead Sloop | ||
| Sail area (100%) | 377 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 222 sq.ft | ||
| Sail area main | 154.39 sq.ft | ||
| I | 37 ft | ||
| J | 12 ft | ||
| P | 31.67 ft | ||
| E | 9.75 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 | Irwin Yachts | ||
| Designer | Ted Irwin | ||
| First built | 1976 | ||
| Last built | 1981 | ||
| Number built | 0 | ?? |
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