Analysis of information sources in references of the Wikipedia article "Greater Underwater Propulsion Power Program" in English language version.
The U-2513 and U-3008 were extensively studied and tested, and lessons learned, like the large battery capacity, streamlined structure and hull, a snorkel, and better fire control system. This led to a USN design which over the years 1946-49 became the Tang class, which made all previous USN submersibles obsoletes.
