[Tallguy]

The Graf Spee mounted 6, 11-inch naval rifles mounted in 2 triple turrets.

The Bismark mounted 15-inch guns.

[Dilbert56]

From what I read having only two turrets made engaging Ajax, Achilles, and Exeter at the same time a real problem. The same book also decscribed the three British crusiers as being able to coordinate their respective broadsides as if they were one ship. Pretty impressive in that era.