Well the problem I am having is finding the boat used for the games model. The best view I found was the S-18 taken in after 1943
http://www.navsource.org/archives/08/0812307.jpg. If I set the boat so that the water line matches the photo the rear of the boat with part of the screws is out of the water. I am trying to match screen shots in sh4 with the historical records. I want to make our screen shots look as if it were actually a color photograph taken during WW2. It was relatively easy until I hit the S class, then things got complicated.