Here are a few screenshots of the user interface Im working on. There is an SH3 icon which links to the game shortcut. Some of the imagery is impressive because you can tilt the camera 360 degrees. Thought submariners might like the bathymetry image.
This is the Bay of Biscay
This is a good example of satellite, aerial and topographic images.
This topographic map is from 1934 so I dont think the Uboat pens have been contructed. I believe they were only in Cadiz, Spain and Abo, Finland.