The invention relates to a cargo ship which comprises at least one hold (3), which comprises an openable and closable deck structure (6) for closing the hold. For the cargo ship t o enable the transport or shaped product exhibiting a large mass from a port of origin to a destination without moisture or water being condensed on the surfaces of the shaped products even if the temperature of the shaped products at the port of origin were much lower than the temperature at the destination, the cargo ship comprises, for warming the hold (3), a heat exchanger (7) connected to the exhaust pipe system (2) of the main engine (1) of the cargo ship for transferring heat energy from the exhaust pipe system to the heat exchanger, a first channel (8) for transferring the fluid from the heat exchanger (7) to a second heat exchanger , a second channel (9) for returning the fluid from the second heat exchanger to the heat exchanger, a blower arrangement (12) for carrying the air heated in the second heat exchanger to an inlet leading to the hold and into the hold, and an outlet for removing a i r from t he hold.
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