Density 28 : The ratio of the weight of a substance to its volume at a given temperature and pressure; e.g. the weight of cargo in pounds per cubic foot
Association of Marine Underwriters of San Francisco (AMUSF), Glossary of Marine Insurance and Shipping Terms, http://www.amusf.com/Definitions_A.htm, CA, USA 2011. (Mrtm Insur and Shipping - Amer) {575}