In the sense that cargo is goods which require transportation, in dreams it represents thoughts, ideas and concepts which need to be considered in a different context to their original purpose.
Psychological / emotional perspective: When goods are packed for cargo they are carefully protected and often stowed away, so when such articles appear in dreams it is time to become aware of forgotten dreams and ideals – of creativity ‘stowed away’ to be used in different circumstances.
Material aspects: Cargo has the same significance as luggage and baggage. Unpacking cargo suggests looking hard at what assets and talents you have. Packing cargo indicates that the time may not be right for a particular plan.
Gives gender - specific: In a woman’s dream bearing cargo may suggest pregnancy or her feelings about this. In a man’s dream it suggests responsibility.
(Load; Shipment) Receiving a shipment in a dream means a burden, impediments, an illness, affliction, uneasiness or anxiety. (Also see Car)