Yes, you can Scroll but it does not work correctly. It malfunctions most of the time when you try to push the screen with the mouse. You have to back up and do it again to make the screen move. It also Scrolls very slow even set to 100%.
This is my preferred way to play, and it is for me, the biggest drawback to the game, in the sense it is frustrating, so it sucks some of the fun away.
Here is a link to a post I made regarding this issue as well.
https://forums.galciv2.com/?ForumID=162&AID=104788&cmd=myposts#814932
I think this really needs to be looked at and fixed. Also, it would be nice to have the Arrow Keys mapped so they moved the screen around. Move ship movement to the Number Pad, or just allow the Keys to be remapped.
Thanks