Needs info on all keyboard controls including the ability to quit. Possibly also remap keys if required.
I do think that putting the tiller the same way as you turn is going to save much confusion, fewer collisions and make it easier for newbies.
Here are the key mappings for VSK which is probably the most successful virtual sailing program to date.
Also I think the view keys (1-9) are in the wrong order. Key 1 should be for the most common view (rear view) through to 9 which is the least common (e.g. front view)