An arcade game yes, but not the frantic sort, just take it easy and guide your narrow boat through some difficult situations. Slowly but surely is the way forward. Just like helming a normal narrow boat on a canal.
A birds eye view is what you get, but you must be very accurate with your maneuvers to progress.
A quad core processor will run this simulation smoothly, anything less might not!
Enjoy this free introduction to Narrowboat.

Level 1 Dock your Boat
Level 2 Newtons Lock