Hmm I'll just interject that I don't think drug cartel submarines are crude, and I've seen lots of pictures. Its non-trivial building these submarines and most

Hmm I'll just interject that I don't think drug cartel submarines are crude, and I've seen lots of pictures. Its non-trivial building these submarines and most competent engineers would balk at being asked to, explaining they were not competent enough. Don't mistake a lack of polish, fanfare and machined parts for primitive as in easy to make work.