To quickly determine a ship's total weight (displacement) at a given water level (draft), which specialized chart would you use?

To quickly determine a ship's total weight, known as its displacement, at a given water level, which is called the draft, you would use a ship's hydrostatic curves. Hydrostatic curves are a specialized chart, or set of graphs, that are unique to each individual vessel and graphically represent various hydrostatic properties of the ship plotted against its draft. To find the displacement, one would first locate the ship's current draft on the vertical....