Just as we might not want to broad-brush the whole of atheism and smear the entirety of atheists everywhere by insisting that they're all somehow "the same," you might also consider that the degree to which any one Christian is aware of, or becomes educated about, good methods of thinking (i.e. incorporating Critical Thinking into their views of the world and of the Bible) can and will vary. Not all atheists express the same kind of atheism: Nietzsche is not Richard Dawkins; the ideas of the Satanic Temple are not necessarily those of Sartre or Camus. Likewise, various Christians will be educated to different degrees and also vary in their reliance upon a bona-fide and intelligent method by which to aid in his/her determining what is "true." (...whatever "truth" is).
Take Jimmy Carter, for instance. While the guy (a fellow Christian brother, actually) has often been seen as having been a wishy-washy president, I actually appreciate the fact that his education very likely played into his own Christian views of the world, as well as into his politics. And the fact that he, like you, was educated to work on sub-marines, that same education probably played into his Christian faith. So, being a Christian doesn't mean one has to be, or remain, stupid. No, ignorance is an existential choice and not one that is honored in the pages of the Bible, despite the misinterpretations that some more Hyper-Fundamentalist Christians may try to spin upon their reading of Sacred Words.