The National Marine Electronics Association (NMEA) introduced a stanrdized methodology clarifying and outlining the appropriate standards for installing marine electronics equipment, the NMEA Installation Standards. The Standards have been designed primarily for after-market installation that traditionally occurs at either boat dealers or marine electronics specialty shops. Over the last 20 years, the marine electronics market has exploded with new safety devices and other equipment. However, different from than some years ago, many retail outlets lack the expertise and manpower to install such equipment properly, which is why the NMEA developed these installation standards. The primary focus for these standards is electronics for boats ranging in size from 25 to 150 ft.