From: Boston, London, Hoboken, now Warwick, NY
Tang was a circular run, I think two others were suspected of sharing the same fate. I think Seawolf was taken out by US forces (friendly fire), and the only boat I recall going down in the Atlantic was the R boat. The rest were operational losses, groundings, and unkown (usually assessed as minings). I think only one boat was lost to an IJN sub, while US subs ate IJN boats for lunch. While the Tang, Harder and Wahoo had great (but short) careers, the most most successful boat (in terms of ships sunk), was was one of the T boats (cannot recall the name at the moment).
Tang is my favorite WW2 boat. If you have not read it yet I suggest 'Clear the Bridge', written by her skipper, Dick O'Kane. Her last patrol was spectacular.