Armed speedboat drones meet layered guns, missiles, and helicopters

How can a warship defend against a speedboat drone carrying loitering munitions?

The proposed counters are 57 mm guns, missiles and armed helicopters, subject to the small boat's open-ocean limitations.

The hypothetical craft is a twenty-foot uncrewed speedboat carrying several Hero-120-type loitering munitions. Proposed counters include 57 mm guns, missiles and armed helicopters. British helicopter rocket pods designed for small-boat attack and equivalent American capabilities are mentioned. The boat's size also raises the earlier distinction between confined-water use and open-ocean seakeeping. No engagement test or fixed interception distance is supplied.