Deadweight Tonnage or DWT is the universal term that refers to how much weight a ship can carry.

DWT includes not only cargo, but crew and passengers, fuel, ballast water and provisions.

Due to the risks inherent to shipping logistics, DWT is a critical measure requiring routine reassessment in relation to a vessel.

For example, in September 2025 a cargo ship in California lost 67 shipping containers while stationary and in port. Commentators have observed this may have been due incorrect weight measurement and human error among other things, since the ship did have a list to starboard at the time.

Ship owners and operators have a duty (as well as financial imperative) to ensure accidents like these do not occur. Maritime engineers and other experts should be consulted to determine DWT as needed.

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Maritime Engineers | Maritime Logistics Consultants