Outstanding work Michal, I am really looking forward to any further progress you will be making.
PS: what about adding a good provision of canned food in our stock? Cans were probably packed in carton boxes, but for eye candy you could leave one open and semi empty, so to show us its content
More information:
http://www.dererstezug.com/Tinned_Me...ron_Ration.htm
http://www.uboataces.com/articles-life-uboat.shtml