Thanks, guys.
I started with stock from the get-go for just that reason.
I played SH3 for a long time before I found this forum and discovered mods, so I was blown away when I installed mods like GWX.
I'm going to check out the mod you suggested. Can't wait to have an SH3 interface - I could not even find the darn TDC in stock SH5!
I went wandering around the sub looking for it - poked at the one shown in the conning tower with no effect, didn't find one down in the control room - I still haven't found the TDC.
Steve