The Type-21 U-boat
The contrast between Germany and Great Britain is one of highly specialised effort on the one hand, as against a potential which has to be used sparingly in certain fields in order that there should be enough of everything…
…It is therefore no reflection on British designers of submarines to say that, in some directions, German submarine and design and construction, as discovered and studied by British experts after the surrender of Germany, is ahead of Great Britain. One must observe the qualifying phrase ‘in some directions’ and avoid the pitfall of thinking that everything that is novel is necessarily good.
In the Type-21 U-boat, for instance, which was the largest and the latest in production, there are many things which make the mouths of British submarine officers water.