We just got back from two epic weeks in the Bahamas and the boat was home and cleaned up. The next evening I received a call from two of my dock neighbors that the sailboat next to my boat took a direct lightning strike and all the bridge lights were illuminated on my boat. I drove over to the marina and found the sailboat was a mess; the AC panels were completely smoked, all instrumentation destroyed and top of the mast instrumentation blown off. Neighbors said sparks showered over my boat.... So, I shut down all power to my boat and opened up all of the panels and electrical access areas - all looks good. Brought the AC power systems back on line and everything came up and operates nominally; generator started and produced power - no issues with the AC power side of things. Then started mains and went through all of the throttle settings and gear reverse and forward - no apparent issues. Then noticed no Smartcraft data on the Vessel View nor did the gauges operate (they are Smartcraft gauges); not good. Then brought the navigational systems on line; all of the displays started normally and amazing enough the radar operates but absolutely no engine or navigational data on the system; no NMEA data no Smartcraft data. Checked all of the helm fuses and engine fuses and all DC breakers - no issues. NMEA 2000 backbone power is good. Obviously, I called the insurance carrier to let them know what is going on. Yesterday I had the CMI technician on the boat and he spent all afternoon going through the data networks and cannot find the smoking gun nor any reason the seven data networks (three CAN networks for each engine and the NMEA 2000 network) are all non functional. He is coming back today to continue but we are stumped.... Four other boats around me also are dealing with issues. More to follow.