The Hunt for Seawolf 4

An audiobook version of this story is available. You'll find a link to it on the author's website. In the dying days of the war in Europe, Nazi scientists manage to put an atomic bomb into orbit. Only a miracle prevented them from bringing it back down on New York. Thirteen years later, with the bomb still in orbit, the Black Sun, a secret neo-Nazi organization with considerable financial and technological resources at their command, builds the Seawolf 4, a super-sub capable of traveling under the Arctic icecap, where it will transmit the order for the satellite bomb to descend on the USSR while at the same time launching a A-bomb armed cruise missile at an American city in the hopes of starting World War III.
The only hope of stopping them are the new US nuclear subs, Nautilus and Skate. Can one of them find the Seawolf 4 in time? Tom Clancy and Clive Cussler fans will enjoy this tension-filled thriller that combines real world events in the 40's and 50's with a dash of science fiction. This novel is fiction but you'll be astonished by how much of it is true when you read the Author's comments at the end.