Until relatively recently, different terms for oil volumes were used on ship and ashore leading to confusion and built-in accounting discrepancies. The accurate determination of cargo quantities on board a vessel is extremely important for safety, commercial and legal reasons. Calculating ship/shore and shore/shore cargo differences is also very important. One of the biggest necessities in being able to effectively account for large volumes of oil within the industry is a uniform set of terms and definitions for oil measurement. The following is a compilation of most of the standard measurement terms and definitions that should be used ashore and on oil tankers today.