My project claims to be a "simulator" for narrowboats. It involves physics and 3D.
The topic itself might be boring for many people. Narrowboats are vehicles which usually don't go faster than 4 mph.
Meanwhile the project is released and I added some basic canal features like locks, a little aqueduct and a small tunnel to it.
Website: (containing also download links for the PC / Mac OS X and Linux X11 versions):