Ullage 07 : The distance between the upper level of any liquid in a tank or in a can or in a barrel and the inside of the tank or the can or the barrel is called Ullage. On a ship mostly the tanks which carry liquid have Ullage Tables
Shrikant Hathi & Binita Hathi, Maritime Practice in India, Shipping Glossary (7th Ed.), published by the law firm BRUS Chambers, Mumbai, India, 2012. http://bruschambers.com/marine/memo51.htm, (Mrtm - Brit) {567}