The Sonata 6.7 is a recreational keelboat designed by Gary Mull and first built in 1986. The design is out of production.
Production The boat was built by Sonata Yachts in Australia, which completed 40 examples starting in 1986.
Design The Sonata 6.7 is built predominantly of fiberglass. It has a fractional sloop rig, an internally-mounted spade-type rudder and a fixed fin keel. It displaces and carries of ballast.
The boat has a draft of with the standard keel. There was a lifting keel version produced as well.
The design has a hull speed of .
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