Well by short reviews... I don't think so...no... sorry, but it was published 1984... I was 10 years old then... all I remember he (the main character, the captain) managed to destroy that nuclear U-boat in some Norwegian fiord... or was it some island...secret base of that U-boat...
i.e. set it on fire... and he comes back after the war as an old man to see her one more time...the name of his sub was Trout I'm 100% sure...I remembered it because it was pretty funny name for a sub...