John Appold
English engineer and inventor of the screw propeller
English engineer and inventor of the screw propeller
1865
161 years ago — 65 years old
Scientists & Innovators
United Kingdom
An engineer focused on marine technology, contributed significantly to the development of screw propellers in the 19th century. This innovation enhanced the efficiency of ships, leading to increased speed and improved maneuverability. Engaged in multiple engineering projects, Appold's designs were instrumental in advancing naval architecture during the era. His work laid the groundwork for future maritime engineering solutions.
Invented the screw propeller
Improved ship efficiency
Contributed to naval architecture
Played quarterback in college at the University of Illinois before transitioning to professional football as a wide receiver. Joined the Canadian Football League (CFL) and played for the Calgary Stampeders and the Ottawa Redblacks. Helped lead the Redblacks to a Grey Cup victory in 2016, earning recognition for contributions to the team's success. Transitioned to a prominent position as a receiver while continuing to showcase skill and versatility on the field.
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