Ferdinand Berthoud was one of the most prominent names in the context of 18th century watchmaking and science. He was especially motivated to creating robust and reliable marine chronometres to aid global exploration. Berthoud’s Marine Clock no. 6 and no. 8 were sea-tested in 1768, and the results were so positive that he was awarded the royal charter of Clockmaker and Mechanic to the French King and his navy.