How could the Germans have won the Battle of the Atlantic?

The Battle of the Atlantic 1939-43; 1942, a Year of Decision. 1. How could the Germans have won the Battle of the Atlantic? Visit this excellent Website on the Battle of the Atlantic from the British perspective. https://www.royalnavy.mod.uk/page-archived?url=%2fNews-and-Events%2fSpecial-Events%2fBattle-Of-The-Atlantic