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IRWIN 28 MK III

IRWIN 28 MK III built by Irwin Yachts (USA) and designed by Ted Irwin. Her first hull was built in 1974 with an overall lengh of 8.69 m or 28.50 ft long

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IRWIN 28 MK III Sailboat Specifications​

Features

Overall Length (LOA) m / ft8.69 m / 28.50 ft
Builder(s)Irwin Yachts
Designer(s)Ted Irwin
BrandIrwin
CountryUnited States
Hull TypeFin with rudder on skeg
First Hull Built1974
Last Hull Built1976
Ballast TypeLead
Rigging TypeMasthead Sloop
UnsinkableNo
TrailerableNo
Ballast Ratio38.46

Dimensions

Overall Length (LOA) 8.69 m / 28.50 ft
Waterline Length (LWL)7.01 m / 23.00 ft
Beam (width)2.74 m / 9.00 ft
Draft1.37 m / 4.50 ft
Light Displacement (MLC) 3538 kg / 7800 lb
Maximum Displacement3538 kg / 7800 lb
Ballast Weight1361 kg / 3000 lb

Performance

Capsize Screening Formula (CSF)1.82
Comfort Ratio26.2
Displacement-Length Ratio (DLR)286.2
Ballast Ratio38.46
Sail Area to Displacement15.39

Above Deck

Estimated Forestay Length11.86 m / 38.90 ft
Reported Sail Area35.02 m² / 377.00 ft²
Total Sail Area35.06 m² / 377.33 ft²
Mainsail Area14.43 m² / 155.33 ft²
I37.00 ft * 11.28 m
J12.00 ft * 3.66 m
P31.70 ft * 9.66 m
E9.80 ft * 2.99 m
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