Mr. Smith, born Aug. 12, 1954, passed away in his Villanova, Pa., home surrounded by his family on Sunday afternoon, Aug. 19, 2018, at the age of 64.

A graduate of Eaglebrook School in Deerfield, Mass.; The Hill School in Pottstown, Pa.; and the University of Virginia in Charlottesville, Va., with a degree in aeronautical engineering, Mr. Smith began his career as an aviator in the United States Navy.

Ultimately rising to the rank of lieutenant commander, he attended the prestigious Navy Fighter Weapons School (popularly known as TOPGUN) in San Diego, Calif., served aboard the aircraft carrier USS Nimitz and piloted the Douglas A-4 Skyhawk and the Grumman F-14 Tomcat.

He closed out his military service with a stint in the United States Naval Reserve, concurrently with civilian duties as first officer aboard the McDonnell Douglas MD-80, for American Airlines. Mr. Smith concluded his flying career as the CEO of Atlantic Aviation, a private flight services firm in Delaware founded by his grandfather, Henry B. duPont.

A lifelong avid yachtsman, the Pennsylvania native skippered his 44-foot sloop Weather Gauge to victory in numerous East Coast races — primarily centered around his family’s summer haven of Mount Desert Island — and, in his youth, accompanied his late father, E. Newbold Smith, on the latter’s yacht Reindeer to the far reaches of the Arctic, setting a world record for northernmost journey by private sailboat.

Mr. Smith is survived by his wife, Priscilla H. Smith; elder sister Eleuthera Grassi; younger brother Henry B. Smith; sons Michael, Alexander, and William; his sister-in-law Andrea D. Smith (widow of his late brother Lewis duP Smith); his stepchildren Philippa K. Eindhoven and P. Augustus Klipstein; and numerous nephews and nieces.

Relatives and friends are invited to his funeral service on Friday, Aug. 24, 2018, at 11 a.m., at the Episcopal Church of the Redeemer in Bryn Mawr, Pa.

Know when to pay your respects.