That would be an interesting meeting.

Bismark only had 8 15inch main guns and the Yamato had 9 18inch main guns. But Bismark was slightly faster by a couple of knots, and smaller, so she could probably out maneuver Yamato, but she'd have to get in closer before she could fire.

Yamato's main guns had a range of about 45,000 yards, and supposedly half the time Bismarks shells didn't go off when they hit. A couple of the British ships she was fighting when she went down actually had 15 inch shells stuck in their armour plate.

Mind you, if both Bismark and Tirpitz were there they'd certainly give the Yamato a run for her money.