Designer: Andy Mcculloch Star Rating: ***A Marblehead for R/C control, a powerful boat east to sail with a good all round performance. Drawings show hard chine & round bilge construction. Full size plan shows side elevation, sections & reduced sail plan A Marblehead for R/C control, a powerful boat east to sail with a good all round performance. Drawings show hard chine & round bilge construction. Full size plan shows side elevation, sections & reduced sail plan.