It’s absolutely mind-boggling that the existing WiFi infrastructure on the military ship didn’t trigger any alarms. This is the kind of thing that you can get from “pro-sumer” grade hardware/software like Ubiquiti, let alone corporate-grade or military-grade stuff. The feature is called “Rogue Access Point Detection” and it’s built into literally every WiFi solution on the market. Like, your local library is analyzing this stuff it’s that basic.

Edit: To more directly address your point, the name shouldn’t matter at all. Rogue AP detection doesn’t give a shit about the display names of things, it looks at the actual hardware addresses and compares them to known things that are owned by your network.