How far apart are each draft marking typically spaced?

In maritime practice, draft markings on a ship's hull are standardized to ensure consistent measurements of water depth and the vessel’s load condition. Typically, these draft marks are spaced 12 inches apart. This uniform spacing allows for easy reading and interpretation of the draft, which is critical for determining how deep the ship sits in the water, ensuring safe maneuvering and avoiding groundings.

By maintaining this consistent distance, crew members can quickly assess changes in draft during loading or when navigating in shallow waters, which helps in managing the vessel's stability and safety. The other potential spacings, while they may seem reasonable, do not conform to the common maritime standards which have established 12 inches as the preferred and widely accepted distance for draft markings.