Have been helping a friend that we travel with get his boat going after a nearby lightning strike disabled his boat. Notice that I said "nearby"!
The strike struck a house next to where his boat is docked doing quite a bit of damage. We were not aware of this until we attempted to use his boat and discovered problems. The most obvious was the generator and engines would not start due to a fried Firebouy fire suppression system. When we replaced the control box for that, we then got a data communications error on his prot engine screen. He has Cat 3806E engines. The E is for electronic...oh oh...
Yes, ECM is damaged and most of the sensors on the port engine.
And now on to the autopilot..hopefully that will do it.