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One-Design Class Type: Multihull

Was this boat built to be sailed by youth or adults? Both

Approximately how many class members do you have? 20

About Isotope

The world’s fastest single-handed 16-foot sloop-rig catamaran according to the US
Portsmouth Yardstick. With symmetric hulls, pivoting centerboards, and balanced 185
sqft sail-plan, the Isotope is an excellent learning platform as well as an affordable, high-tech,
high-performance racing cat. It has a nicely-balanced helm and outpoints most
other catamarans.
The Isotope was originally designed for double-handed sailing on inland lakes in a
moderate breeze of 7-8kts. It excels in light air, moving in 1kt of wind, and flying a hull
in 5kts. Winds up to 15kts are controllable, but sailing single-handed 2-up in 18kts is a blast


Boats Produced: 625

Class boat builder(s):

Sharp Fiberglass, LLC PO Box 1976, Wake Forest NC 27588 919-672-4300

Approximately how many boats are in the USA/North America? 530

Where is your One-Design class typically sailed in the USA? List regions of the country:

Mid and South Atlantic coastal states

Does this class have a spinnaker or gennaker? No

Ideal combined weight of range of crew:  150-180 lbs

Portsmouth Yardstick Rating:  73

Boat Designed in 1965

Beam: 7’6″

Weight of rigged boat without sails: 285 lbs

Draft: 6″-24″

Mast Height: 26′