PROBLEM TO BE SOLVED: To provide a powder and granular material carrying vessel capable of preventing powder and granular materials from sticking to an inside of a hold.SOLUTION: A powder and granular material carrying vessel which transports powder and granular materials by loading the same in a hold 2 divided into a plurality of compartments comprises: an unloading device, including in-hold transfer means to transfer the powder and granular materials in the hold with watertight compartments divided by bulkheads 2b outside the hold along a bottom section of the hold, which carries the powder and granular materials from inside the hold out; air supply means 310 and 320 which supplies the in-hold transfer means with air; and watertight means which can be operated independently from the air supply means, is arranged at a connection section from the in-hold transfer means of the unloading device and can seal the connection section in a watertight state.
