In May 2022 I decided to build a companion model for the s-boot I had built in 2021.  I like companion models, they make great comparisons.  It also fits with my small WW2 coastal forces navy that I've been constructing for a few years.

 There were only two problems:

1.  My almost complete lack of knowledge or reference material for the Kriegsmarine; and 

2. A total lack of commercially available plans.