Doc was born in Rouleau, Saskatchewan. He became one of Alberta's most successful oilmen and industrialists through his company, Bow Valley Industries, and many other ventures. He and his brothers, B.J. and Don Seaman, were among the first wave of adventurous oilmen who pioneered the industry after the Second World War. Doc's war record was itself remarkable; he flew eighty-two successful combat missions out of North Africa as a sub-hunting pilot, earning a Government of France citation for bravery.
An original Calgary Flames owner, Doc followed the team passionately to the end. Besides bringing the Flames to Calgary, he was a key player in building the Saddledome and bringing the 1988 Olympic Winter Games to Calgary.
A true hockey fan, Doc joined a small group of visionaries to save Canadian hockey from mediocrity at a time when the European game was becoming dominant. Canada's five straight junior hockey gold medal wins have their roots in Project 75, now called the Seaman-Hotchkiss Foundation. He was a strong supporter of Hockey Canada's grass root development programs as well as Hockey Hall of Fame's founding principals of "Entertainment, Education and Excellence".
Some of Doc's many honours include:
-1979 - Founding Governor of Hockey Canada Foundation
-Member - 1980 Calgary Sports Advisory Committee
-Honorary Life Member - The Association of Professional Engineers, Geologists and Geophysicist
-1989 - Saskatchewan Oil & Gas Industry Hall of Fame
-1993 - Officer, Order of Canada
-1997 - Canadian Oilmen's Hall of Fame
-2001 - Honorary Regent, Athol Murray College of Notre Dame
-2007 - Alberta Sports Hall of Fame
-2008 - Alberta Order of Excellence