Deadweight cargo refers to any load that causes a vessel to dip lower than its projected draft. This type of cargo can often be difficult to transport and can result in added expenses for the carrier. However, there are several synonyms that can be used to describe this type of cargo. Some may refer to it as non-revenue cargo, which means that it does not add any value to the shipment. Others may refer to it as ballast cargo, which is a type of cargo used to stabilize a vessel that has empty spaces. Another synonym is intransit cargo, which means that it is simply traveling from one place to another without adding any value.