If Nelson and Rodney had been fast battleships

How might a genuinely fast Nelson class have affected the hunt for Bismarck?

Faster Nelson-class ships could have altered the British hunting force, but readiness and refit state would still decide which ships sailed.

The answer treats speed as a force-composition issue rather than a headline specification. At 28 knots, Nelson and Rodney could join combinations of Hood, Prince of Wales, and King George V that their historical speed prevented. A heavier interception group might still lose Hood, but Bismarck would then face an additional battleship immediately rather than escaping the first engagement as a continuing threat. A few knots could alter readiness decisions, squadron composition, and the consequences of battle damage across an entire operation.