There are 2 ways to do navigation. It's car up or north up. North up is the traditional way and mimics how you would navigate using a analog (paper) map. Car up is more intuitive to the small screen and forward display since it mimics the way you see. I don't think Apple Maps allows North up using navigation.
When looking at a Apple Maps if you hit the Arrow in the bottom left you get North Up, but this is not available in navigation mode.