Wear &Tear : The ordinary wearing away of the various parts of a vessel, machinery, and equipment through use. Such damage is not accidental in nature, but is inevitable
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}