We made some major upgrades to our electronics this spring. We had a Standard Horizon 150 chart plotter. We replaces that with a Raymarine e125 Multifunction Display. This display interfaces our new electronics and our existing Raymarine ST60+ instruments. We also added the Raymarine AIS650 transceiver with a dedicated antenna on top of the mizzen mast. Also on the mizzen mast we replaces the older radar dome with a Raymarine 18 inch HD Radome which interfaces with the multifunction display. All of the parts network together and, surprising to me, worked the first time I turned them on. I added a RAM mount attached to the mizzen mast to allow the display to swivel and be seen from a wide area of the cockpit. We did keep the Standard Horizon chartplotter mounted in the nav station as a backup. More upgrades are being planned.