Container modules could give merchant ships point defence

Could armed merchant ships return in an era when one or two missiles can sink a transport?

Possibly, especially through containerized defensive modules that protect merchant ships without trying to make them full warships.

Modular defences could give strategically important container ships a chance against drones and long-range missiles. Plausible modules include electronic warfare equipment, close-in weapon systems, or a CAMM-like point-defence capability. Containerization could simplify fitting the equipment to selected ships. A complete VLS module and safe at-sea reloading would remain difficult. Merchant survivability directly affects the logistics on which naval operations depend.