Do you have to know a lot of math (higher than basic calculus) to enlist to work in a US Navy nuclear submarine?

Answer 1

You can probably get away with not knowing calculus. The most important factor, initially, is that you do extremely well on the entrance exam. That entrance exam contains no calculus at all, and in fact, no math more difficult that learned in algebra 2.

It has been quite a while since I enlisted, but I don't recall that the course work required trigonometry either although that was required for my enlisted rating.

The course for officers which I also took, does require some calculus.