Railguns, electromagnetic effects, and ship hardening

Would electromagnetic railguns damage their own ships with EMP effects?

They would require containment and additional hardening, but warships already incorporate EMP protection and the challenge is manageable in a purpose-built design.

A railgun's concentrated electromagnetic effects differ from the wide-area pulse associated with a nuclear explosion. The gun and its power system would be designed to focus and contain those effects instead of broadcasting them through the ship. Warships already receive electromagnetic hardening, though a railgun installation would need additional protection. A rumor that a Chinese test ship suffered overload problems illustrates the uncertainty surrounding prototype integration at sea.