I've been having trouble with the S-Gerat Sonar in SH3. I first noticed it when I edited my career files to increase my renown and switch to an IXD2. When I started a patrol with the new boat, the sonar array somehow managed to destroy itself. I deleted my career and started a new one, this time increasing my renown right after the first patrol. I bought the sonar array before the patrol, but it didn't show up during the patrol. I couldn't see it in the u-boat layout window, and I couldn't activate it either.
I don't know if this is normal, but the 1943 IXD2's in the single missions don't have sonars either.
So here's my question: are we actually supposed to see the sonar's status on the u-boat's layout window, or does it only pop up when it's destroyed?