In the spring of 1967 insurance salesman and explorer Ralph S. Plaisted led his expedition, agonizingly close to achieving their goal of locating the Geographic North Pole.
Plaisted used his Speedmaster and a sextant to manually navigate the expedition through 1330 km of shifting ice flows and blinding snowstorms.
Even when temperature dropped below -50°, the Speedmaster functioned with unerring precision before Plaisted used the watch to configure exactly 90 degrees true north- The Geographic North Pole.
