The unit of measure of a vessel's burthen or tunnage The name is derived From a large wine barrel; hence, the number of runs of wine that she could carry For practical purposes, most authorities deem the tunnage/burthen of a vessel to be the product of her length times beam times depth divided by 100
{i} large beer barrel or wine cask; large container used for fermenting, fermenting vat; measure of liquid capacity equal to 955 liters or 252 gallons (used for measuring wine); weight of 2,240 pounds (1,016 kilograms); large quantity which is vague or indefinite; chimney (Slang); drunk, alcoholic (Slang)