@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 "An inertial navigation system which uses a Ring-Laser gyro. It calculates, via dead reckoning, the position, heading, attitude and velocity. It is mainly used in naval ships. Heading acurracy: 3 Arcmin Sec (Lat) RMS and 7 Arcmin Sec (Lat) Peak. Position: 1.0 nm in 8 hr TRMS."@en ; sdo:inDefinedTermSet ; sdo:name "Sperry Marine MK39 inertial navigation system"@en ; sdo:termCode "SDN:L22::TOOL0885" .