[Major Johnson]

On the subject of the hydrophone, is it supposed to be available while on the surface?? I'm noticing in my latest career that I can only use it manually when I'm submerged, but yet I still get contact reports from my crewman while I'm surface running. Is this just another one of those leftover bugs that never got fixed?? The only mod I'm using is RSRDC. I noticed that with FOTRS that I couldn't work it manually at all in the Tambor and Gato class subs.