Layered ways to defend ships from drone swarms

How can surface ships defend against drone swarms?

Proposed options include jamming, low-cost rockets, guns, lasers, and high-power radar, with the choice dependent on the threat and the equipment fitted.

Electronic warfare can attack a drone swarm's command and control, while rockets, guns, and lasers offer other possible responses. The immediate problem is fitting suitable defences to ships. The discussion also considers high-power radar against poorly shielded drones. Its cost example is hypothetical: even a cheap swarm could damage a radar worth millions, so the value of the protected equipment matters when deciding how much to spend on interception.