@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix dcterms: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix sdo: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . @prefix xsd: . rdf:type sdo:DefinedTerm ; sdo:description "A Canadian company that specialises in the design and manufacturing of echosounders for hydrographic survey and mapping, pre/post dredging survey, ship navigation, oceanographic research, and sub-bottom profiling of the sea bottom sediment layers. It was founded in 1981."@en ; sdo:inDefinedTermSet ; sdo:name "Knudsen Engineering Limited"@en ; sdo:termCode "SDN:L35::MAN0225" .