Just to let you all know, but for now, it is option Number Four... The Tench will have ST because it starts after the periscope is on the boat, so therefore it will function. However, there will not be an SJ antenna on the boat, since the game does not allow "window dressing" of that type... you can only have one surface radar antenna.
There are still other ways to attempt to attack this hill of a problem, but for now, it is the "upgrade" (rather, failure to upgrade) of the ST Periscope that kills any and all attempts at functioning ST radar in an ongoing career. Even when forcing the periscope on a new conning tower, the shaft would fail to "upgrade" and then the game did not like that, and resulted in crashes or odd behaviors, which may as well have been a crash. It's kind of like Hotel California, in that we've stabbed it with our steely knives, but can't quite kill the beast... sigh
