German-language books about u-boats?

[Thniper]

Greetings, fellow Kaleuns! :arrgh!:

I'm searching for German-language books about u-boat warfare in WWII.

To be more precise, I search for the following:

1. Kriegstagebücher of u-boat captains

2. enthralling novels about u-boat operations like Das Boot (by Lothar-Günther Buchheim)

3. general books about German WWII u-boat warfare including topics: different u-boat types, weapon systems, technical info, historical situation, etc.

Thanks in advance,

Thniper

[AntEater]

Regarding Narratives of Submarine Captains, I can think of Nach Kompass by Hans-Friedrich Merten, Nasses Eichenlaub by Teddy Suhren and U 333 by Peter "Ali" Cremer.

One of my personal favorites is Feindfahrten by Wolfgang Hirschfeld, the diary of the Radioman of U 109.

Regarding technical literature, there's "deutsche U-Boote" by Bodo Herzog as standard as well as a similarly named volume by Ulrich Gabler (the constructor of nearly all post WW2 U-Boats and wartime LI of Suhrens U-654).

I don't know that many novels, but on Amazon they list a "Kaleu Arne Thomsen" series of novels by Kurt Maasch. Looks like pocketbooks, maybe comparable to Alexander Kent novels, only from german perspective.