Industry mourns former NMMA board member March 7, 2012 Burton Sherman, former owner of E.S. Ritchie & Sons Inc., a marine compass manufacturer, died March 3 in Massachusetts. He was 85. An avid boater,
Industry mourns former NMMA board member Burton Sherman, former owner of E.S. Ritchie & Sons Inc., a marine compass manufacturer, died March 3 in Massachusetts. He was 85. An avid boater,