“…a Flemish geographer, cosmographer and cartographer. He is most renowned for creating the 1569 world map based on a new projection which represented sailing courses of constant bearing (rhumb lines) as straight lines—an innovation that is still employed in nautical charts.” - Wikipedia

Basically it was really cool and advanced geometry in the 1500s. Other fun inventions of the time included bongs, rifles, and knitting machines.

Posted for the field orders, raged for the “service fee.”