Sigh....it started well. Had a nostalgic feel for the period of the Greatest generation. OK...some contemporary slang did get mixed in...not a big thing. And yes, the broad strokes for both a US Balao class, and a type IX U Boat were right on the money. However, the US sub never seems to file any reports, or, receive any orders while at sea. And, the Captain on more than one occasion hazards his boat to deal with survivors.
On the German side, the notion that the Kriegsmarine, which was taken by surprise when war began, and miles behind in its strategic fleet construction program; would divert huge resources for a single, elaborate, Q ship is a stretch. And how this ship could launch, and recover a Type 37 Torpedo Boat simply boggles the mind. Just one issue, how did this Q ship get past the Royal Navy to get out of the Baltic, or across the North Sea? How about their endless fuel supply for a torpedo boat, a two- screw merchantman, and an Arado 196?
Where the author finally lost me was the absurd kidnap plot by the evil Chermins ...right under the noses of the USN, the Coast Guard, the Civil Air Patrol, and the Boy Scouts. Even the writers of Don Winslow and the Navy would have snickered at this outlandish idea.
Unless you are accepting of military fairy tales, don’t bother