Deadweight tonnage (DWT) A measure of how much mass a ship can carry. It does not include the weight of the ship itself. DWT is the sum of the weights of cargo, fuel, fresh water, ballast water, provisions, passengers, and crew. Post navigationPrevious post: Classification societyNext post: Demolition price Leave a Reply Cancel replyYou must be logged in to post a comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.