Just wiki it fellows, all the info is there.
http://www.warfish.com/scrap7.html
there are some photos of the final attack, there is still some debate on what the heck Mush was doing trying to get out during the day on the surface.
hard to say, but it hurt the boat to lose O'Kane, at least in my book.
then again, I love that man.... Dick O'Kane that is...