What kind of sailboat is a Sonar, and what are the features of this boat?
Sonars are a triple handed keelboat raced by both adaptive and able bodied sailors. The Sonar is used by sailors who enjoy a team mentality, who are often interested in racing in addition to cruising. The Sonar has a mileu of possible adaptions. Several are described below.
The video below shows both a transfer bench and an swiveling adapted Sonar seat (although the sound quality is poor),