What Britain could learn from a captured Bismarck

If British destroyers captured Bismarck, could they tow her home and what intelligence would she yield?

A tow might be possible with help, and the ship could reveal German systems, codes, crew knowledge, and the practical weaknesses of her machinery.

Towing Bismarck to Britain might be possible with sufficient assistance, although the operational risk could still be judged excessive. A captured hull would expose German equipment, codes, and documents in their working context. Prisoners could also be interrogated about procedures and machinery that the physical ship alone could not explain. The intelligence prize would include direct evidence of the strengths and weaknesses of German high-pressure steam engineering.