Deadweight all told

Deadweight all told (DWAT) is the total weight a ship can carry at its summer load line, the sum of cargo, bunkers, fresh water, stores, spare parts, crew, and the constant. It equals summer displacement minus lightship and is the figure quoted as a vessel’s deadweight in chartering. It is not the same as cargo deadweight, which is DWAT less everything that is not cargo: a 50,000 DWAT handymax sailing with 1,500 tonnes of bunkers, water, and stores can lift about 48,500 tonnes of cargo. Charterers price freight against cargo deadweight, not DWAT.