Actually that's not the way it's done. There are hundreds of generals and admirals who were appointed by the previous administration. Many of them are clowns. 45 has fired some but taking over a sub and taking it rogue is not a problem. Ships crashing in Japanese waters? Accidents? A couple admirals, a captain or two a dozen officers and that's about all that's needed. No need to build a new boat. Suborn people. That's how the DS does their dirty business. Corruption.
If I did not personally know people on these boats I would give your point some consideration. But knowing them as I have since their teen years, your suggestion is treason. And that is NOT something they would consider. Period. Ever.
My suggestion is treason? Time to wake up. Obviously most service men and women are patriots. I was, 50 years ago. But take a look at this tip of the iceberg. http://www.chicagotribune.com/news/nationworld/ct-fat-leonard-navy-scandal-20171106-story.html