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IDEM built by St. Lawrence Boat Co. and designed by Clinton Crane. Her first hull was built in 1897 with an overall lengh of 9.75 m or 32.00 ft long

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IDEM Sailboat Specifications​


Overall Length (LOA) m / ft9.75 m / 32.00 ft
Builder(s)St. Lawrence Boat Co.
Designer(s)Clinton Crane
Hull TypeCenterboard (Trunk)
Number of Hulls Built13
First Hull Built1897
Last Hull Built2004
Ballast TypeLead
Rigging TypeGaffhead Sloop
Ballast Ratio8.82


Overall Length (LOA) 9.75 m / 32.00 ft
Waterline Length (LWL)5.79 m / 19.00 ft
Beam (width)2.44 m / 8.00 ft
Draft1.22 m / 4.00 ft
Light Displacement (MLC) 3084 kg / 6800 lb
Maximum Displacement3084 kg / 6800 lb
Ballast Weight272 kg / 600 lb


Capsize Screening Formula (CSF)1.69
Comfort Ratio28.75
Displacement-Length Ratio (DLR)442.59
Ballast Ratio8.82
Sail Area to Displacement26.83

Above Deck

Reported Sail Area55.74 m² / 600.00 ft²
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