I am fairly new to Cities Skylines and not a heavy gamer. I cannot figure out what functional role, if any, canals play. Are they purely aesthetic, or do they change how the game works in some way? Can I use them to build a city which works better, not just looks better? If yes, how?
Small boats aren't available in the game and it doesn't look like ocean liners would fit in there.
I have the After Dark expansion, but no other DLC.