Redundancy versus compact triple mounts

Would shared machinery make a triple turret too vulnerable to a single hit?

A compact mount trades some independence for space and armour, and can still include auxiliary systems to preserve a degree of redundancy.

The question contrasts Nelson's mechanically linked guns with a larger turret in which each weapon has its own protected machinery. The choice is a trade-off between internal independence and a compact protected enclosure. A smaller turret occupies less deck and barbette volume and can leave weight and space for thicker external armour. Designers can also add secondary and auxiliary systems so that damage to the normal mechanism does not automatically immobilize every gun.