Marc Waterman is a Dutch speedcuber. He invented the Waterman method for 3x3 in the early 1980s and averaged below 17 seconds, making him possibly the fastest Corners First solver until the modern era of speedcubing.
Marc Waterman began solving a Japanese copy of the Rubik's cube in 1981. He worked out a solution on his own which he then refined with Daan Krammer "a friend and math-genius". Marc Waterman won a local speedcubing contest in September 1981 with a time of 36 seconds; Guus Razoux Schultz was second (40 seconds). From this time Waterman would train with Razoux-Schultz. The Dutch National Finals were held on April 24th, 1982 in Utrecht. According to Waterman:
I had been computer-gaming the whole night before, and came at the contest very sleepy, excited and nervous. Guus was used to doing long-distance-swimming contests. He has strong hands and very good stamina, and he was ready for it. For him it was easier to solve new, ungreased cubes.
Razoux-Schultz won the contest, and entry to the World Championship, with a best time of 29.34 seconds; Waterman was second (30.41 seconds); Daan Krammer was third (32.07 seconds).
Waterman continued speedcubing "for a year or so", and won all the contests of the CFF (Cubism For Fun, the Dutch cube association). According to Razoux-Schultz, "Marc got down to an average of about 16.4 seconds, I got down to 19.2 seconds". Waterman later started an organic vegetable farm called "Tuinderij De Ketel". He has only competed in one championship of the modern era. At the Twente Open 2012 he finished in 38th place with a best time of 24.02 seconds.