He made the first two, albeit unsuccessful challenges for the America's Cup, held since 1851 by the New York Yacht Club.
In this capacity, he was most notable for inviting members of the New York Yacht Club to race in the Royal Yacht Squadron regatta open to all nations around the Isle of Wight on 22 August 1851.
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He was an avid yachtman who was a member of the Corinthian Yacht Club of Philadelphia; the New York Yacht Club; and the Eastern Yacht Club and the Corinthian, both of Marblehead, Massachusetts.
Due to the restrictions on use of equipment and materials sourced from outside the defenders country, the Australian syndicate had to obtain permission from the New York Yacht Club to buy the edge grain fir from Stone Brothers Logging, Maple Bay, Vancouver Island, British Columbia.
His numerous other offices included Commodore of the New York Yacht Club, chairman of the Hoover Institution at Stanford University, and directorships of Chemical Bank, Chubb, Abercrombie & Fitch, and other companies.
Jobson either serves on or has served on the boards of Operation Sail, US Sailing, Olympic Sailing Committee, Leukemia Cup Regatta Series, Fales Committee (US Naval Academy), New York Yacht Club, International Yacht Restoration School, Annapolis Yacht Club, and the National Sailing Hall of Fame.
Ali Koç is a Rotarian and a member of the Istanbul Open Sea Yacht Club and New York Yacht Club.
He was a member of Delta Kappa Epsilon, Down Town Association, Jekyll Island Club, Merchants Club of New York, Metropolitan Club of New York, New England Society, New York Yacht Club, Players Club of New York, Republican Club of New York, Riding Club of New York, Seawanhaka Corinthian Yacht Club, Skull and Bones, South Side Sportsmen's Club, Union League Club of New York and the Whist Club of New York.