Q&A · 28:49-29:10

Roberts-class torpedo bulges and gun-platform stability

The monitors' large bulges were designed for underwater protection, with extra stability as a useful secondary effect.

Question

Were the Roberts-class torpedo bulges intended only for protection, or also to create a more stable gun platform?

Short answer

They were deliberately fitted for protection, while the improved gun-platform stability was a useful secondary benefit.

Notes

The Roberts-class monitors carried conspicuous torpedo-defense bulges around their hulls. Protection from underwater damage was their deliberate design purpose. The wider form also helped steady the ship as a gun platform, but that was an added benefit rather than the primary reason for the bulges. The distinction separates the design requirement from a welcome performance side effect.