C Service Hydro (CSerH) is based only upon the American-built fishing and pleasure outboard motors listed below and approved for use in the C Service classes during the 1930s, ’40s, and ’50s RequirementsMinimum Age: 14 years oldEngine: OMC Speeditwin, Johnson P-50, Johnson PX-50, Johnson POMinimum Weight: 450 lbs. StatisticsCompetition Record: 55.557 mphStraightaway Record: 59.469 mph2011 Participants: 142011 Races: 62011 National Champion: Jim Nilsen, Edgewood, WA