Bruce Gemmell is an American swimming coach.
He is also "an engineer and inventor" with "11 American patents on which his name appears..." In 2016 Gemmell was named a women's assistant coach for the United States Olympic Swimming Team.
[1] Gemmell is a coach at the Nation's Capital Swim Club, where he has worked with athletes including Katie Ledecky and Andrew Gemmell.
[4] As an athlete Gemmell swam at the University of Michigan and qualified for the US Olympic Trials in 1980 and 1984.
His Latest Innovation: The World’s Best Swimmer