C-Questor is a personal submarine for the hobbyist. It’s a build-it-yourself deal, but for $75 000 you get all the tools to manufacture submarines for friends and family.
It seems that many hobbyists are interested in personal subs. I visited the Personal Submersibles Organization and found 10 or 15 individuals who have either completed their own submersibles, or are in the process of building them. Carsten Standfuss, for example, is building a 15 metre long 4 man submarine which he wants to use for “private pleasure and treasure hunting.”
My personal favorite is the Phoenix 1000, for only $78 million you can cruise for 250 nautical miles at 18 knots. The sub is fully air-conditioned and is decked out in luxurious wood-panelled comfort.