Grain capacity

Grain capacity is the total cubic volume of a cargo hold available to a free-flowing bulk cargo that fills every space between frames and beams, measured to the inside of the shell plating and up into the underdeck and hatch coamings. It is larger than bale capacity, which measures only to the inside of the frames and spar ceiling for cargo that cannot run into the gaps. The difference between grain and bale cubic on a single ship is typically 7 to 10 percent. Grain capacity is the figure used to load wheat, corn, and soybeans, and it feeds the grain stability calculation for heeling moment.