In late 1940 in my dynamic campaign as the Germans and have sunk 2 Fleet Carriers, All 3 Royal Navy Battlecruisers, 3 Battleships (2 Queen Elizebeth class and 1 R class) as well as 40 more escorts plus 200000 tons of merchant shipping per month. I'd be surprised if Churchill is still in office.
Also had a memorable battle where Z17 took on 2 British destroyers and sank one and chased the other one off with heavy damage. Unfortunately there have been some losses particularly among the heavy cruisers 2 pocket battleships went down but they accounted for Hood in the process. I also lost Blucher and Prinz Eugen but Prinz Eugen sank HMS Warspite with torpedoes before being scuttled.