Martin, I was using a ship simulator that was 3D looking, and had some small boats that were pretty neat trying to maneuver around. However I had a toss my old tablet which that app was on. I tried searching for it but could not find it, perhaps it was outdated and no longer available.
I just downloaded something called "Mooring" for my current Android tablet. Kind of simple, has an overhead view of the ship and the object is to move a ship from one point to another using helper Tugs while at the Docks. It does it does have good momentum effect. There are a lot more to select from, but I'll play with this one for a little bit.