Looking at a 28' cruiser (1996 and newer) and most seem to have AC/Heat.

How does the Ac/Heat run when away from the dock and under way (engines =
on). Some specs I've seen mention an inverter. Do you have to have =
this in order for 110volt items to run when the engine is on? =20

Some mention invereor and battery charger.

Is an inverter a standard item for the most part when a vessel has =
AC/Heat in this category (1996 and newer)?

Is an inverter and battery charger a one in the same type device?

I understand that you need either a generator or shorepower when engines =
are off, just confused about how things work with engine power.

Thanks,

Bob