INTERNATIONAL 21

INTERNATIONAL 21

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Swing Keel
Rigging Type: Masthead Sloop
LOA: 21.50 ft / 6.55 m
LWL: 17.33 ft / 5.28 m
S.A. (reported): 175.00 ft² / 16.26 m²
Beam: 7.33 ft / 2.23 m
Displacement: 1,750.00 lb / 794 kg
Ballast: 400.00 lb / 181 kg
Max Draft: 4.00 ft / 1.22 m
Min Draft: 1.16 ft / 0.35 m
Construction: FG
First Built: 1976
Builder: International Yacht Corp. (USA)
Designer: Helsen

KLSC Leaderboard

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Sailboat Calculations

Definitions
S.A. / Displ.: 19.32
Bal. / Displ.: 22.86
Disp: / Len: 150.10
Comfort Ratio: 10.24
Capsize Screening Formula: 2.44
Hull Speed: 5.58 kn
Pounds/Inch Immersion: 453.89 pounds/inch

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Sailboat Links

Designers: Johannes "Jopie" Helsen
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Notes

Sometime in the late 1970's, a company called Southcoast Boats (Oldsmar FL,USA) began making a similar model called the EXPLORER (21)??, almost certainly from the same tooling. It is thought that at least 30 of this later version were built.