An OHPr myself - god I loved huntin’ the shadows with that tail. This happened a lot with the russians before - someone mentioned that diesels are hard to detect - this is true. But I still caught quite a few japanese and korean diesels before they could do much. I think as with our “cia” skills - we have laxed off in our asw skills as well.
My real question though is where was the Battle group sub. My guess is they were sitting behind and below the diesel and watching the whole thing - of course if it had been a real situation ....
The dirty little secret is that in a CVBG, BX (the ASW OTC) usually falls to the DESRON commander, who in turn has not a clue how to effectively use a submarine. We’re usually given stovepipes in a out of the way patch of water and sent on wild goose chases.