@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 12-channel (L1, 1575 MHz, C/A code) GPS and 2 beacon DGPS receiver (283.5-325 KHz). It comprises a MX412 Control and Display Unit (CDU) of unknown sub-model, fitted to a co-axial cabled, combined GPS and beacon combo antenna (compatible models are MGL-4, MGL-3 or MXB5). Depending on the combo antenna unit used, the system can achieve <1 - 2 m accuracy in areas with good beacon differential coverage. The navigation system has been replaced by the MX512."@en ; sdo:inDefinedTermSet ; sdo:name "Navico Simrad Yachting MX412 differential global positioning system"@en ; sdo:termCode "SDN:L22::TOOL0936" .