What are the subsystems of a 21st century cargo boat?

Question

If a 21stC cargo sailing ship was to be taken as a system. What would be its subsystems? Ive got:

Navigation, Electronics, Mechanics, Materials, Loading procedures....some more?

Answer 1

Main systems are: Propulsion, hotel load, cargo care.

Propulsion includes, fuel transfer. Hotel load includes, light, heat-ac, ventilation, food preservation and preparation, sanitary system, plumbing.

Cargo care includes loading-discharge, temperature-humidity control, ballast system.

Answer 2

Sanitation, unloading, R & R, crew sustenance, communications, potable water, solid waste, sewage, electricity, propulsion.

Same as todays systems just newer.

Answer 3

Navigation, steering, fresh water, main engines, main gen set, loading and unloading systems,  hydraulics for cranes, steering, bow and stern thrusters, electrical,  oil for everything,  sewage, steam,  fuel, air conditioning,  heating, all the hotel side,  windshield wipers, communication, that include Internet,  radar, depth sounder, gps, all the electronics, emergency generator,  life boat davit, fire system,  all alarm,  air compressors, control air, refrigeration for cargo containers,  and plenty more.