Displacement refers to the weight of water displaced by a vessel when fully loaded and stationary, typically measured in tons. It is divided into light displacement, loaded displacement, and deadweight tonnage (DWT). In foreign trade, displacement is commonly used in ship sales and purchases, chartering, freight calculation, and port cost accounting. Note: Displacement differs from deadweight tonnage—the former is the total weight of the vessel itself plus cargo, etc., while the latter refers only to cargo-carrying capacity. It also differs from net tonnage and gross tonnage (volume indicators); displacement is a weight indicator. Usage scenarios include: newbuilding contracts, second-hand ship transactions, marine insurance, and port charges. Precautions: It is necessary to clarify whether it is light or loaded displacement to avoid confusion; different ship types (such as bulk carriers and oil tankers) vary greatly in displacement, so it should be verified before quoting. Distinction: Displacement reflects the total weight of the vessel and affects draft and port restrictions; deadweight tonnage reflects cargo-carrying capacity and affects freight revenue.
📝 Examples
1. In the second-hand ship sale and purchase contract, both parties agreed to use summer loaded displacement as the basis for confirming the vessel's specifications. (Note: Used in ship transactions to clarify vessel size.)
2. The port authority calculates berthing fees and tugboat fees based on the vessel's displacement. (Note: Used in port cost accounting and related to operating costs.)
💡 Foreign Trade Tips
Foreign trade terms are the foundation of international business communication
Trade practices may vary slightly by country; pay attention when using them
When using terms in contracts, specify the applicable version (e.g., Incoterms 2020)
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