Complex sentence: Nelson is a veteran America's Cup racer as well as designer, he teamed with Dennis Conner on three Stars & Stripes boats (12-meter, catamaran, and IACC) from 1985 to 1995 as both a racer and designer.
Split into simpler sentences: Nelson is a veteran America's Cup racer as well as designer. He teamed with Dennis Conner on three Stars & Stripes boats (12-meter, catamaran, and IACC) from 1985 to 1995 as both a racer and designer.