About: http://webisa.webdatacommons.org/366822109

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In order to maintain and repair all kinds of engine-room equipment, especially machinery that operates at high pressures and speeds, the careful and skillful use of measuring tools is essential.
http://www.w3.org/ns/prov#wasQuotedFrom	maritime.org