What would remain of the Kriegsmarine surface fleet after losing most of its major warships by the end of 1941?
Short answerIt would effectively cease to exist as a surface force.
NotesThe scenario removes battleships, cruisers, light cruisers, and destroyers in successive blows through 1941. After losses on that scale, the Kriegsmarine would no longer exist as an effective surface force. Counting surviving individual hulls would miss the collapse of the fleet's ability to operate as a coherent surface arm. The submarine war would be a separate question from that surface-fleet judgment.