I just pushed the current code to GitHub.

It's amazing, with 93 lines of node.js and 225 lines of HTML, much of the basic functionality is present.

You'll need to either have your own map tile images or change the HTML to use online maps/charts to get a map (otherwise you'll see tile addresses and a boat symbol, I think).

Although intended to be run on a Raspberry Pi, I imagine you could run this code on any computer.

My next task is to get Websocket communication between the server and the web page working, and have the server simulate a moving boat, and have the map update.

Let me know if you have any comments!