RE: Basic Needs to make a "real rc sub"
Glad to assist. Feel free to contact that guy in Taiwan or post any questions on his post over at SP. He does some interesting work on smaller scale subjects.
Yes, the Romeo is diesel & there is one on display in a park in Shanghai's Qingpu district about 20km to the west of my office. One day, I'll have to get out there & take some photos.
Chuck