"Bus" Mosbacher graduated from The Choate School (now Choate Rosemary Hall) in 1939 and from Dartmouth College in 1943. During World War II, Mosbacher served on a Navy minesweeper in the Pacific. In the 1940s and 1950s he oversaw his family's oil, natural gas and real estate business.
Mosbacher is best known for his yacht racing. In 1962, even before his two America's Cup victories, he was described by Sports Illustrated as "the finest helmsman of our time."[2] As a schoolboy sailor he had been Junior Champion of Long Island Sound sailing an Atlantic, and at Dartmouth he led the sailing team to two Intercollegiate Championships (the McMillan Cup 1941 & 42). During the 1950s he won eight consecutive Long Island Sound season championships in the International One-Design Class, and in 1959 he was Southern Ocean Racing Conference (SORC) champion. In 1958 he and Warner Wilcox founded the Mamaroneck Frostbite Association, for racing 9' Dyer Dhows in winter, in response to discrimination by some of the yacht clubs against having Jewish members. Mosbacher successfully defended the America's Cup in 1962 at Newport, Rhode Island in the sloop Weatherly, and again in 1967 in the 12-metre class yacht Intrepid.
In 1967 Mosbacher received the Martini & Rossi trophy, thereby becoming the United States' sailor of the year along with Betty Foulk.[4] In 1986, he received the Golden Plate Award of the American Academy of Achievement.[5] Mosbacher was elected into the inaugural class of the America's Cup Hall of Fame in 1993[6] and the inaugural class of the U.S. National Sailing Hall of Fame in 2011.[7]