I would like to show you an interesting experience. As most of you alredy know I am working on HMS Endurance(s)
Taking as example the last one you could find a very fine high resolution picture of the Port side and the first idea is to use it to draw the SB profile just mirroring it...But the starboard side is different!!!
http://upload.wikimedia.org/wikipedia/c ... mouth1.jpg
http://shipsandharbours.com.s3.amazonaws.com/13694.jpg