Randers Fjord is a fairly long fjord along the east coast of Jutland. There are no roads across the road for most of the duration of the fjord – so it can be a bit of detour if you just want to cross over the Fjord to do something. Fortunately there is a ferry connecting the two sides of the fjord so you can cut down a long trip around the fjord.
The ferry trip only takes around 5 minutes and the ferry is drawn across the fjord by a rope so there is not a lot of sound from an engine.
The ferry is crossing the fjord at a fairly scenic location so it is fine to arrive and see the ferry just leaving since this will give you 10-15 minutes to get out of the car and have a look at the waters around the fjord.