Civilian uses for StanFlex-style modules

If StanFlex became a standard on freighters, what civilian modules could ships use before wartime conversion?

Useful peacetime modules could include cranes, firefighting gear, lifesaving equipment, and non-kinetic counter-piracy systems.

Proposed civilian modules include cargo cranes, extra firefighting equipment, and additional lifesaving systems. Freighters could also carry non-kinetic deterrents against piracy. The discussion distinguishes these defensive tools from guns, but does not specify particular systems or explain how crews would exchange the modules.