The award-winning Sharrow Propeller was invented by Gregory Sharrow and developed by Sharrow Engineering LLC, a Philadelphia-based nautical and aeronautical design firm. In 2019, Sharrow Marine was launched by Sharrow Engineering for all nautical applications for the Sharrow Propeller. Sharrow Engineering offers a variety of innovative, energy-saving propellers -- each custom-designed and scientifically suited for client's specific needs.