I do have som pics during contruction, but these are not released.
These are the only onces for now:
http://www.silenthunter.dk/link.asp?.../1/UC3_1_1.htm
I can compile a liste of questions for the designer if you like, but I can say its app 18 meters long.
Theoratical max depth is app 600 meters, but safe max depth is 100 meters.
Its app 30 tons.
Snorkel depth speed should be app 10 knots