Raymarine A50D 5" fishfinder plotter. All the features of the A50 plus a 500 watt HD Digital fishfinder built in. Preloaded with Navionics inland lakes and fishing maps of the US. Upgrade up to even Navionics Gold or Platinum. Superior fish detection and bottom discrimination using Raymarine's unmatched HD Digital sonar technology. Includes a dual frequency 50/200 kHz transcom mount transducer witRaymarine A50D 5" fishfinder plotter. All the features of the A50 plus a 500 watt HD Digital fishfinder built in. Preloaded with Navionics inland lakes and fishing maps of the US. Upgrade up to even Navionics Gold or Platinum. Superior fish detection and bottom discrimination using Raymarine's unmatched HD Digital sonar technology. Includes a dual frequency 50/200 kHz transcom mount transducer wit... More Details And Product Review Raymarine A50D 5-Inch Waterproof Marine GPS and Chartplotter , Lowest Price for Raymarine A50D 5-Inch Waterproof Marine GPS and Chartplotter , Raymarine A50D 5-Inch Waterproof Marine GPS and Chartplotter For Sale.