The tradeoff between shared and independent gun cradles

Why mount naval guns on a shared cradle instead of giving each barrel independent elevation?

A shared cradle is smaller, lighter, and simpler, but independent mountings are more resistant to damage and mechanical failure.

Mounting several guns on one cradle simplifies elevation machinery, lets the barrels sit closer together, and reduces turret size and weight. The cost is that one failure can disable the complete group and the closely spaced guns can interact unfavorably in flight. Independent cradles add machinery and space but provide better durability because a hit or malfunction may remove only one weapon. Armored partitions in ships such as the Iowa class reinforce that damage isolation. The panel also distinguishes catastrophic penetration from ordinary battle friction: shock, recoil, and small mechanical faults can stop equipment even when armor remains intact. Modern preference for single mounts reflects improved reliability and limited-war priorities, while older designs often accepted some accuracy loss to gain volume of fire.