There is, however, another aspect to consider regarding the data coming from the engine through an interface, for example, YDEG-04, which does not output any data when the engine is off. In this case, on Saillogger, in the N2K parameter monitoring settings fields, the parameter disappears and a blank field is shown. I must say, however, that, at least in the case of RPM, when the engine is restarted, Saillogger starts monitoring the parameter again (at least in my case). This should also happen with the parameter that shows the total engine hours "propulsion.port.runTime" but unfortunately on my last trip it didn't happen and I can't understand why. I say this because this feature is the basis of my desire to know for each trip how many hours of sailing I did and how many of engine.