Why vending machines are unusual aboard warships

Have warships carried vending machines, and why are they not more common?

Some modern ships have, but existing crew shops and questions about charging sailors make them an uncommon and service-specific choice.

Vending machines appeared on some modern warships but were uncommon. A navy must decide what a machine would sell and why sailors should pay for those items while deployed. In Royal Navy practice, the NAAFI shop already manages snacks and other crew purchases. An American example later adds that vending-machine profits could go to a ship or unit fund, showing how the same device can support collective welfare rather than private retail alone.