Look, I despise VCs as much as the next guy, but this doesn’t smell like a typical cynical VC money grab, like at all. To me it smells like an ultra-extreme sport. To ordinary people, it’s extraordinarily stupid, they’re certainly in over their heads, but nobody casually signs up to go to 4000m depth without being well aware of the risks.
There was one article I read last year (don't have it here) where he claimed his hard costs were $1M per voyage to cover fuel and consumables. So the $250k buy-in was literally a break-even on his expenses (he carries 4 passengers paying the fee, plus himself in the sub). None of that covers any R&D and he had some very respectable people working for him, including engineers from Boeing, NASA, and Northdrop Grumman. So we can assume those were hefty salaries for his R&D team.
I'm sure they were scrappy too, hence the "cobbled" together nature of things. But it does seem like this was a true startup in ever sense of the word.
Unfortunately it might be leaning closer to the Theranos type of startup where he might have oversold his capabilities to keep the ball rolling and investors happy.
Last paragraph:
"This ship is exactly what the Navy needs, when it needs it," agreed EB President John P. Casey, who was on board during the trials. "There is no substitute for the Virginia-class submarine."
Testing included its first dive to max depth.