When one charterer is not able to provide a complete cargo, it is possible for the owner to arrange a number of charters, and there will be a separate charter party for each of the different parcels which are carried. This type of charter is common in the parcel tanker trade, most usually with liquid chemicals and vegoils. It is important, therefore, that these charter parties are drawn up so that there is no conflict between the various interests involved. The calculation of demurrage and distribution of the payments between the different charterers can be a complex problem with this type of agreement.
A variation of this in dry cargo chartering is known as a ‘parcelling service’. A charterer will charter a ship for a particular voyage and then let out the space in the ship to a number of different shippers.